The Collaborative International Dictionary of English v.0.48:

Litter \Lit"ter\, v. t. [imp. & p. p. Littered
   (l[i^]t"t[~e]rd); p. pr. & vb. n. Littering.]
   1. To supply with litter, as cattle; to cover with litter, as
      the floor of a stall.
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            Tell them how they litter their jades. --Bp.
                                                  Hackett.
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            For his ease, well littered was the floor. --Dryden.
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   2. To put into a confused or disordered condition; to strew
      with scattered articles; as, to litter a room.
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            The room with volumes littered round. --Swift.
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   3. To give birth to; to bear; -- said of brutes, esp. those
      which produce more than one at a birth, and also of human
      beings, in abhorrence or contempt.
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            We might conceive that dogs were created blind,
            because we observe they were littered so with us.
                                                  --Sir T.
                                                  Browne.
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            The son that she did litter here,
            A freckled whelp hagborn.             --Shak.
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The Collaborative International Dictionary of English v.0.48:

Litter \Lit"ter\ (l[i^]t"t[~e]r), n. [F. liti[`e]re, LL.
   lectaria, fr. L. lectus couch, bed. See Lie to be
   prostrated, and cf. Coverlet.]
   1. A bed or stretcher so arranged that a person, esp. a sick
      or wounded person, may be easily carried in or upon it.
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            There is a litter ready; lay him in 't. --Shak.
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   2. Straw, hay, etc., scattered on a floor, as bedding for
      animals to rest on; also, a covering of straw for plants.
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            To crouch in litter of your stable planks. --Shak.
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            Take off the litter from your kernel beds. --Evelyn.
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   3. Things lying scattered about in a manner indicating
      slovenliness; scattered rubbish.
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            Strephon, who found the room was void.
            Stole in, and took a strict survey
            Of all the litter as it lay.          --Swift.
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   4. Disorder or untidiness resulting from scattered rubbish,
      or from thongs lying about uncared for; as, a room in a
      state of litter.
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   5. The young brought forth at one time, by a cat, dog, sow or
      other multiparous animal, taken collectively. Also Fig.
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            A wolf came to a sow, and very kindly offered to
            take care of her litter.              --D. Estrange.
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            Reflect upon that numerous litter of strange,
            senseless opinions that crawl about the world.
                                                  --South.
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The Collaborative International Dictionary of English v.0.48:

Litter \Lit"ter\ (l[i^]t"t[~e]r), v. i.
   1. To be supplied with litter as bedding; to sleep or make
      one's bed in litter. [R.]
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            The inn
            Where he and his horse littered.      --Habington.
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   2. To produce a litter.
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            A desert . . . where the she-wolf still littered.
                                                  --Macaulay.
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WordNet (r) 3.0 (2006):

litter
    n 1: the offspring at one birth of a multiparous mammal
    2: rubbish carelessly dropped or left about (especially in
       public places)
    3: conveyance consisting of a chair or bed carried on two poles
       by bearers
    4: material used to provide a bed for animals [syn: bedding
       material, bedding, litter]
    v 1: strew; "Cigar butts littered the ground"
    2: make a place messy by strewing garbage around
    3: give birth to a litter of animals

Moby Thesaurus II by Grady Ward, 1.0:

153 Moby Thesaurus words for "litter":
   air mattress, arsy-varsiness, be confined, bear, bear a child,
   bear young, bed, bed down, bedding, bedstead, bier, bolster,
   brancard, break, bridle, brood, brush, bunk, cacolet, calve,
   camel litter, cast, clamjamfry, clutch, clutter, collateral, couch,
   curry, currycomb, cushion, dandy, debris, derange, disarrange,
   disarray, dishevel, dislocate, disorder, disorganize, dolly,
   doolie, doss, drench, drop, dust, farrago, farrow, fawn, feed,
   foal, fodder, fragments, fry, garbage, gentle, get, give birth,
   gocart, groom, gurney, handbarrow, handle, harness, hash, hatch,
   have, have a baby, have young, helter-skelter, higgledy-piggledy,
   hitch, hodgepodge, hysteron proteron, innerspring mattress, issue,
   jampan, jumble, jungle, junk, kelter, kip, kitten, labor, lamb,
   lie in, lumber, manage, mat, mattress, mess, mess up, milk,
   misarrange, mishmash, muddle, muss, muss up, nest, odds and ends,
   offal, offspring, pad, pallet, pillow, pup, raff, refuse, riffraff,
   rub down, rubbish, rubble, ruffle, rug, rummage, rumple, saddle,
   scatter, scramble, scrap, sedan, sedan chair, shoddy, sleeping bag,
   sofa, spat, spawn, springs, stretcher, strew, tame, tend, the hay,
   the sack, throw, topsy-turviness, topsy-turvydom, tousle, train,
   trash, travail, truck, tumble, turmoil, underbed, underbedding,
   unholy mess, waste, water, welter, whelp, yean, yoke, young



Easton's 1897 Bible Dictionary:

Litter
   (Heb. tsab, as being lightly and gently borne), a sedan or
   palanquin for the conveyance of persons of rank (Isa. 66:20). In
   Num. 7:3, the words "covered wagons" are more literally "carts
   of the litter kind." There they denote large and commodious
   vehicles drawn by oxen, and fitted for transporting the
   furniture of the temple.