Webster's Revised Unabridged Dictionary · 1913

Down

Down , noun

[Akin to LG. dune, dun, Icelandic d{not transcribed}nn, Swedish dun, Danish duun, German daune, compare Dutch dons; perh. akin to English dust.]

1.
(Zoology) Fine, soft, hairy outgrowth from the skin or surface of animals or plants, not matted and fleecy like wool
(a)
(Zoology) The soft under feathers of birds. They have short stems with soft rachis and bards and long threadlike barbules, without hooklets.
(b)
(Zoology) The pubescence of plants; the hairy crown or envelope of the seeds of certain plants, as of the thistle.
(c)
(Zoology) The soft hair of the face when beginning to appear.
And the first down begins to shade his face. — Dryden
2.
That which is made of down, as a bed or pillow; that which affords ease and repose, like a bed of down
When in the down I sink my head, Sleep, Death's twin brother, times my breath. — Tennyson
Thou bosom softness, down of all my cares! — Southern
Collocations (1)
Down tree (Botany) , a tree of Central America (Ochroma Lagopus), the seeds of which are enveloped in vegetable wool.

Down (doun) , transitive verb

To cover, ornament, line, or stuff with down. [Rare] — Young

Down , noun

[Old English dun, doun, Anglo-Saxon dūn; of Celtic origin; compare Ir. dūn hill, fortified hill, Gael. dun heap, hillock, hill, Welsh din a fortified hill or mount; akin to English town. See Town, and compare Down, adv. & prep., Dune.]

1.
A bank or rounded hillock of sand thrown up by the wind along or near the shore; a flattish-topped hill; -- usually in the plural.
Hills afford prospects, as they must needs acknowledge who have been on the downs of Sussex. — Ray
She went by dale, and she went by down. — Tennyson
2.
A tract of poor, sandy, undulating or hilly land near the sea, covered with fine turf which serves chiefly for the grazing of sheep; -- usually in the plural. [English]
Seven thousand broad-tailed sheep grazed on his downs. — Sandys
3.
A road for shipping in the English Channel or Straits of Dover, near Deal, employed as a naval rendezvous in time of war.
On the 11th [June, 1771] we run up the channel... at noon we were abreast of Dover, and about three came to an anchor in the Downs, and went ashore at Deal. — Cook (First Voyage)
4.
A state of depression; low state; abasement. [Colloquial]
It the downs of life too much outnumber the ups. — M. Arnold

Down , adverb

[For older adown, Anglo-Saxon adūn, adūne, prop., from or off the hill. See 3d Down, and compare Adown, and compare Adown.]

1.
In the direction of gravity or toward the center of the earth; toward or in a lower place or position; below; -- the opposite of up.
2.
(a) From a higher to a lower position, literally or figuratively; in a descending direction; from the top of an ascent; from an upright position; to the ground or floor; to or into a lower or an inferior condition; as, into a state of humility, disgrace, misery, and the like; into a state of rest; -- used with verbs indicating motion.
It will be rain to-night. Let it come down. — Shakespeare
I sit me down beside the hazel grove. — Tennyson
And that drags down his life. — Tennyson
There is not a more melancholy object in the learned world than a man who has written himself down. — Addison
The French... shone down [i. e., outshone] the English. — Shakespeare
(b)
In a low or the lowest position, literally or figuratively; at the bottom of a descent; below the horizon; on the ground; in a condition of humility, dejection, misery, and the like; in a state of quiet.
I was down and out of breath. — Shakespeare
The moon is down; I have not heard the clock. — Shakespeare
He that is down needs fear no fall. — Bunyan
3.
From a remoter or higher antiquity.
Venerable men! you have come down to us from a former generation. — D. Webster
4.
From a greater to a less bulk, or from a thinner to a thicker consistence; as, to boil down in cookery, or in making decoctions. — Arbuthnot
Down, therefore, and beg mercy of the duke. — Shakespeare
If he be hungry more than wanton, bread alone will down. — Locke
The temple of Herè at Argos was burnt down. — Jowett (Thucyd.)
Persons in London say down to Scotland, etc., and those in the provinces, up to London. — Stormonth
Come down upon us with a mighty power. — Shakespeare

Down is sometimes used elliptically, standing for go down, come down, tear down, take down, put down, haul down, pay down, and the like, especially in command or exclamation.

Down, therefore, and beg mercy of the duke. Shak.
[1913 Webster]

If he be hungry more than wanton, bread alone will down. Locke.

Down is also used intensively; as, to be loaded down; to fall down; to hang down; to drop down; to pay down.

The temple of Herè at Argos was burnt down. Jowett (Thucyd.).

Down, as well as up, is sometimes used in a conventional sense; as, down East.

Persons in London say down to Scotland, etc., and those in the provinces, up to London. Stormonth.

Down , preposition

[From Down, adv.]

1.
In a descending direction along; from a higher to a lower place upon or within; at a lower place in or on; as, down a hill; down a well.
2.
Hence: Towards the mouth of a river; towards the sea; as, to sail or swim down a stream; to sail down the sound.
Collocations (2)
Down the country , toward the sea, or toward the part where rivers discharge their waters into the ocean.
Down the sound , in the direction of the ebbing tide; toward the sea.

Down , transitive verb

To cause to go down; to make descend; to put down; to overthrow, as in wrestling; hence, to subdue; to bring down. [Archaic or Colloquial]
To down proud hearts. — Sir P. Sidney
I remember how you downed Beauclerk and Hamilton, the wits, once at our house. — Madame D'Arblay

Down , intransitive verb

To go down; to descend. — Locke

Down , adjective

1.
Downcast; as, a down look. [Rare]
2.
Downright; absolute; positive; as, a down denial. [Obsolete] — Beau. & Fl
3.
Downward; going down; sloping; as, a down stroke; a down grade; a down train on a railway.
Collocations (2)
Down draught , a downward draft, as in a flue, chimney, shaft of a mine, etc.
Down in the mouth or Down at the mouth , chopfallen; dejected.