Webster's Revised Unabridged Dictionary · 1913

Side

Side (sīd) , noun

[Anglo-Saxon sīde; akin to Dutch zijde, German seite, Old High German sīta, Icelandic sī{not transcribed}a, Danish side, Swedish sida; compare Anglo-Saxon sīd large, spacious, Icelandic sī{not transcribed}r long, hanging.]

1.
The margin, edge, verge, or border of a surface; especially (when the thing spoken of is somewhat oblong in shape), one of the longer edges as distinguished from the shorter edges, called ends; a bounding line of a geometrical figure; as, the side of a field, of a square or triangle, of a river, of a road, etc.
3.
Any outer portion of a thing considered apart from, and yet in relation to, the rest; as, the upper side of a sphere; also, any part or position viewed as opposite to or contrasted with another; as, this or that side.
Looking round on every side beheld A pathless desert. — Milton
4.
(a) One of the halves of the body, of an animals or man, on either side of the mesial plane; or that which pertains to such a half; as, a side of beef; a side of sole leather.
(b)
The right or left part of the wall or trunk of the body; as, a pain in the side.
One of the soldiers with a spear pierced his side. — John xix. 34
5.
A slope or declivity, as of a hill, considered as opposed to another slope over the ridge.
Along the side of yon small hill. — Milton
6.
The position of a person or party regarded as opposed to another person or party, whether as a rival or a foe; a body of advocates or partisans; a party; hence, the interest or cause which one maintains against another; a doctrine or view opposed to another.
God on our side, doubt not of victory. — Shakespeare
We have not always been of the... same side in politics. — Landor
Sets the passions on the side of truth. — Pope
7.
A line of descent traced through one parent as distinguished from that traced through another.
To sit upon thy father David's throne, By mother's side thy father. — Milton
8.
Figuratively: Aspect or part regarded as contrasted with some other; as, the bright side of poverty.
Collocations (6)
By the side of , close at hand; near to.
Exterior side (Fortification) , See Exterior, and Illust. of Ravelin.
Interior side (Fortification) , the line drawn from the center of one bastion to that of the next, or the line curtain produced to the two oblique radii in front. — H. L. Scott
Side by side , close together and abreast; in company or along with.
To choose sides , to select those who shall compete, as in a game, on either side.
To take sides , to attach one's self to, or give assistance to, one of two opposing sides or parties.

Side , adjective

1.
Of or pertaining to a side, or the sides; being on the side, or toward the side; lateral.
One mighty squadron with a side wind sped. — Dryden
2.
Hence, indirect; oblique; collateral; incidental; as, a side issue; a side view or remark.
The law hath no side respect to their persons. — Hooker
3.
Long; large; extensive. [Obsolete or Scottish] — Shakespeare
His gown had side sleeves down to mid leg. — Laneham
To insure a side-box station at half price. — Cowper

Side , intransitive verb

1.
To lean on one side. [Obsolete] — Bacon
2.
To embrace the opinions of one party, or engage in its interest, in opposition to another party; to take sides; as, to side with the ministerial party.
All side in parties, and begin the attack. — Pope

Side , transitive verb

1.
To be or stand at the side of; to be on the side toward. [Obsolete]
His blind eye that sided Paridell. — Spenser
2.
To suit; to pair; to match. [Obsolete] — Clarendon
3.
(Shipbuilding) To work (a timber or rib) to a certain thickness by trimming the sides.
4.
To furnish with a siding; as, to side a house.