The Collaborative International Dictionary of English v.0.48:

Slow \Slow\ (sl[=o]), a. [Compar. Slower (sl[=o]"[~e]r);
   superl. Slowest.] [OE. slow, slaw, AS. sl[=a]w; akin to OS.
   sl[=e]u blunt, dull, D. sleeuw, slee, sour, OHG. sl[=e]o
   blunt, dull, Icel. sl[=o]r, sl[ae]r, Dan. sl["o]v, Sw.
   sl["o]. Cf. 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.
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   2. Not happening in a short time; gradual; late.
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            These changes in the heavens, though slow, produced
            Like change on sea and land, sidereal blast.
                                                  --Milton.
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   3. Not ready; not prompt or quick; dilatory; sluggish; as,
      slow of speech, and slow of tongue.
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            Fixed on defense, the Trojans are not slow
            To guard their shore from an expected foe. --Dryden.
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   4. Not hasty; not precipitate; acting with deliberation;
      tardy; inactive.
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            He that is slow to wrath is of great understanding.
                                                  --Prov. xiv.
                                                  29.
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   5. Behind in time; indicating a time earlier than the true
      time; as, the clock or watch is slow.
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   6. Not advancing or improving rapidly; as, the slow growth of
      arts and sciences.
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   7. Heavy in wit; not alert, prompt, or spirited; wearisome;
      dull. [Colloq.] --Dickens. Thackeray.
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   Note: 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.
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   Slow coach, a slow person. See def.7, above. [Colloq.]

   Slow lemur, or Slow loris (Zool.), 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.
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   Syn: Dilatory; late; lingering; tardy; sluggish; dull;
        inactive.

   Usage: Slow, Tardy, Dilatory. Slow is the wider term,
          denoting either a want of rapid motion or inertness of
          intellect. Dilatory signifies a proneness to defer, a
          habit of delaying the performance of what we know must
          be done. Tardy denotes the habit of being behind hand;
          as, tardy in making up one's acounts.
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The Collaborative International Dictionary of English v.0.48:

Slow \Slow\ (sl[=o]), obs. imp. of Slee, to slay.
   Slew. --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Slow \Slow\, adv.
   Slowly.
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         Let him have time to mark how slow time goes
         In time of sorrow.                       --Shak.
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The Collaborative International Dictionary of English v.0.48:

Slow \Slow\, v. t. [imp. & p. p. Slowed; p. pr. & vb. n.
   Slowing.]
   To render slow; to slacken the speed of; to retard; to delay;
   as, to slow a steamer. --Shak.
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The Collaborative International Dictionary of English v.0.48:

Slow \Slow\, v. i.
   To go slower; -- often with up; as, the train slowed up
   before crossing the bridge.
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The Collaborative International Dictionary of English v.0.48:

Slow \Slow\, n.
   A moth. [Obs.] --Rom. of R.
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WordNet (r) 3.0 (2006):

slow
    adv 1: without speed (`slow' is sometimes used informally for
           `slowly'); "he spoke slowly"; "go easy here--the road is
           slippery"; "glaciers move tardily"; "please go slow so I
           can see the sights" [syn: slowly, slow, easy,
           tardily] [ant: apace, chop-chop, quickly,
           rapidly, speedily]
    2: of timepieces; "the clock is almost an hour slow"; "my watch
       is running behind" [syn: behind, slow]
    adj 1: not moving quickly; taking a comparatively long time; "a
           slow walker"; "the slow lane of traffic"; "her steps were
           slow"; "he was slow in reacting to the news"; "slow but
           steady growth" [ant: fast]
    2: at a slow tempo; "the band played a slow waltz" [ant: fast]
    3: slow to learn or understand; lacking intellectual acuity; "so
       dense he never understands anything I say to him"; "never met
       anyone quite so dim"; "although dull at classical learning,
       at mathematics he was uncommonly quick"- Thackeray; "dumb
       officials make some really dumb decisions"; "he was either
       normally stupid or being deliberately obtuse"; "worked with
       the slow students" [syn: dense, dim, dull, dumb,
       obtuse, slow]
    4: (used of timepieces) indicating a time earlier than the
       correct time; "the clock is slow" [ant: fast]
    5: so lacking in interest as to cause mental weariness; "a
       boring evening with uninteresting people"; "the deadening
       effect of some routine tasks"; "a dull play"; "his competent
       but dull performance"; "a ho-hum speaker who couldn't capture
       their attention"; "what an irksome task the writing of long
       letters is"- Edmund Burke; "tedious days on the train"; "the
       tiresome chirping of a cricket"- Mark Twain; "other people's
       dreams are dreadfully wearisome" [syn: boring, deadening,
       dull, ho-hum, irksome, slow, tedious, tiresome,
       wearisome]
    6: (of business) not active or brisk; "business is dull (or
       slow)"; "a sluggish market" [syn: dull, slow, sluggish]
    v 1: lose velocity; move more slowly; "The car decelerated"
         [syn: decelerate, slow, slow down, slow up,
         retard] [ant: accelerate, quicken, speed, speed
         up]
    2: become slow or slower; "Production slowed" [syn: slow,
       slow down, slow up, slack, slacken]
    3: cause to proceed more slowly; "The illness slowed him down"
       [syn: slow, slow down, slow up]