The Collaborative International Dictionary of English v.0.48:

Allot \Al*lot"\, v. t. [imp. & p. p. Allotted; p. pr. & vb. n.
   Allotting.] [OF. aloter, F. allotir; a (L. ad) + lot lot.
   See Lot.]
   1. To distribute by lot.
      [1913 Webster]

   2. To distribute, or parcel out in parts or portions; or to
      distribute to each individual concerned; to assign as a
      share or lot; to set apart as one's share; to bestow on;
      to grant; to appoint; as, let every man be contented with
      that which Providence allots him.
      [1913 Webster]

            Ten years I will allot to the attainment of
            knowledge.                            --Johnson.
      [1913 Webster]

WordNet (r) 3.0 (2006):

allot
    v 1: give out; "We were assigned new uniforms" [syn: assign,
         allot, portion]
    2: allow to have; "grant a privilege" [syn: accord, allot,
       grant]
    3: administer or bestow, as in small portions; "administer
       critical remarks to everyone present"; "dole out some money";
       "shell out pocket money for the children"; "deal a blow to
       someone"; "the machine dispenses soft drinks" [syn:
       distribute, administer, mete out, deal, parcel out,
       lot, dispense, shell out, deal out, dish out,
       allot, dole out]

Moby Thesaurus II by Grady Ward, 1.0:

95 Moby Thesaurus words for "allot":
   accord, administer, afford, align, allocate, allow, appoint,
   apportion, appropriate to, array, assign, assign to, award, bestow,
   bestow on, collocate, communicate, compose, confer, deal, deal out,
   destine, detail, dish out, dispense, dispose, distribute, divide,
   dole, dole out, donate, earmark, equip, extend, fate, fit out, fix,
   fork out, furnish, gift, gift with, give, give freely, give out,
   grant, hand out, heap, help to, impart, issue, lavish, let have,
   line, line up, lot, make assignments, mark off, mark out for,
   marshal, mete, mete out, offer, ordain, parcel out, place,
   portion off, pour, prescribe, present, proffer, rain, rally, range,
   regiment, render, reserve, restrict, restrict to, schedule, serve,
   set, set apart, set aside, set off, set out, share out, shell out,
   shower, slip, snow, space, tag, tender, vouchsafe, yield