Webster's Revised Unabridged Dictionary · 1913

Slow

Slow (slō) , imperfect

Slew. [obsolete] — Chaucer

Slow (slō) , adjective

[Old English slow, slaw, Anglo-Saxon slāw; akin to Old Saxon slēu blunt, dull, Dutch sleeuw, slee, sour, Old High German slēo blunt, dull, Icelandic slōr, slar, Danish slov, Swedish slo. Compare Sloe, and Sloth.]

1.
Moving a short space in a relatively long time; not swift; not quick in motion; not rapid; moderate; deliberate; as, a slow stream; a slow motion.
2.
Not happening in a short time; gradual; late.
These changes in the heavens, though slow, produced Like change on sea and land, sidereal blast. — Milton
3.
Not ready; not prompt or quick; dilatory; sluggish; as, slow of speech, and slow of tongue.
Fixed on defense, the Trojans are not slow To guard their shore from an expected foe. — Dryden
4.
Not hasty; not precipitate; acting with deliberation; tardy; inactive.
He that is slow to wrath is of great understanding. — Bible (KJV) - Proverb xiv. 29
5.
Behind in time; indicating a time earlier than the true time; as, the clock or watch is slow.
6.
Not advancing or improving rapidly; as, the slow growth of arts and sciences.
7.
Heavy in wit; not alert, prompt, or spirited; wearisome; dull. [Colloquial] — Dickens. Thackeray

Slow is often used in the formation of compounds for the most part self-explaining; as, slow-gaited, slow-paced, slow-sighted, slow-winged, and the like.

Collocations (3)
Slow coach , a slow person. See def.7, above. [Colloquial]
Slow lemur or Slow loris (Zoology) , an East Indian nocturnal lemurine animal (Nycticebus tardigradus) about the size of a small cat; -- so called from its slow and deliberate movements. It has very large round eyes and is without a tail. Called also bashful Billy.
Slow match , See under Match.

Slow , adverb

Slowly.
Let him have time to mark how slow time goes In time of sorrow. — Shakespeare

Slow , transitive verb

To render slow; to slacken the speed of; to retard; to delay; as, to slow a steamer. — Shakespeare

Slow , intransitive verb

To go slower; -- often with up; as, the train slowed up before crossing the bridge.

Slow , noun

A moth. [Obsolete] — Rom. of R