The Collaborative International Dictionary of English v.0.48:

Till \Till\, n.
   1. (Geol.) A deposit of clay, sand, and gravel, without
      lamination, formed in a glacier valley by means of the
      waters derived from the melting glaciers; -- sometimes
      applied to alluvium of an upper river terrace, when not
      laminated, and appearing as if formed in the same manner.
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   2. A kind of coarse, obdurate land. --Loudon.
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The Collaborative International Dictionary of English v.0.48:

Till \Till\, prep. [OE. til, Icel. til; akin to Dan. til, Sw.
   till, OFries. til, also to AS. til good, excellent, G. ziel
   end, limit, object, OHG. zil, Goth. tils, gatils, fit,
   convenient, and E. till to cultivate. See Till, v. t.]
   To; unto; up to; as far as; until; -- now used only in
   respect to time, but formerly, also, of place, degree, etc.,
   and still so used in Scotland and in parts of England and
   Ireland; as, I worked till four o'clock; I will wait till
   next week.
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         He . . . came till an house.             --Chaucer.
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         Women, up till this
         Cramped under worse than South-sea-isle taboo.
                                                  --Tennyson.
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         Similar sentiments will recur to every one familiar
         with his writings -- all through them till the very
         end.                                     --Prof.
                                                  Wilson.
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   Till now, to the present time.

   Till then, to that time.
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The Collaborative International Dictionary of English v.0.48:

Till \Till\, n. [Abbrev. from lentil.]
   A vetch; a tare. [Prov. Eng.]
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The Collaborative International Dictionary of English v.0.48:

Till \Till\, n. [Properly, a drawer, from OE. tillen to draw.
   See Tiller the lever of a rudder.]
   A drawer. Specifically:
   (a) A tray or drawer in a chest.
   (b) A money drawer in a shop or store.
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   Till alarm, a device for sounding an alarm when a money
      drawer is opened or tampered with.
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The Collaborative International Dictionary of English v.0.48:

Till \Till\, v. t. [imp. & p. p. Tilled; p. pr. & vb. n.
   Tilling.] [OE. tilen, tilien, AS. tilian, teolian, to aim,
   strive for, till; akin to OS. tilian to get, D. telen to
   propagate, G. zielen to aim, ziel an end, object, and perhaps
   also to E. tide, time, from the idea of something fixed or
   definite. Cf. Teal, Till, prep..]
   1. To plow and prepare for seed, and to sow, dress, raise
      crops from, etc., to cultivate; as, to till the earth, a
      field, a farm.
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            No field nolde [would not] tilye.     --P. Plowman.
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            the Lord God sent him forth from the garden of Eden,
            to till the ground from whence he was taken. --Gen.
                                                  iii. 23.
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   2. To prepare; to get. [Obs.] --W. Browne.
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The Collaborative International Dictionary of English v.0.48:

Till \Till\, v. i.
   To cultivate land. --Piers Plowman.
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The Collaborative International Dictionary of English v.0.48:

Till \Till\, conj.
   As far as; up to the place or degree that; especially, up to
   the time that; that is, to the time specified in the sentence
   or clause following; until.
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         And said unto them, Occupy till I come.  --Luke xix.
                                                  13.
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         Mediate so long till you make some act of prayer to
         God.                                     --Jer. Taylor.
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         There was no outbreak till the regiment arrived.
                                                  --Macaulay.
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   Note: This use may be explained by supposing an ellipsis of
         when, or the time when, the proper conjunction or
         conjunctive adverb begin when.
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WordNet (r) 3.0 (2006):

till
    n 1: unstratified soil deposited by a glacier; consists of sand
         and clay and gravel and boulders mixed together [syn:
         till, boulder clay]
    2: a treasury for government funds [syn: public treasury,
       trough, till]
    3: a strongbox for holding cash [syn: cashbox, money box,
       till]
    v 1: work land as by ploughing, harrowing, and manuring, in
         order to make it ready for cultivation; "till the soil"

Moby Thesaurus II by Grady Ward, 1.0:

91 Moby Thesaurus words for "till":
   Fort Knox, backset, bank, before, blackmail, boodle, booty,
   bursary, cash register, cashbox, chest, coffer, coin box,
   cultivate, culture, cut, delve, depository, dig, dress, exchequer,
   fallow, farm, fertilize, fisc, force, gold depository, graft,
   harrow, haul, hoe, hot goods, in advance of, labor, list, locker,
   loot, manure, money, money chest, mulch, penny bank, perks,
   perquisite, pickings, piggy bank, plant, plow, plunder,
   pork barrel, prior to, prize, prune, public crib, public till,
   public treasury, public trough, rake, register, repository, safe,
   safe-deposit box, sow, spade, spoil, spoils, spoils of office,
   squeeze, stealings, stolen goods, storehouse, strong room,
   strongbox, subtreasury, swag, take, tend, thin, thin out,
   till the soil, to, treasure-house, treasury, turn, until, unto,
   up to, vault, weed, weed out, work