The Collaborative International Dictionary of English v.0.48:

Secrete \Se*crete"\, v. t. [imp. & p. p. Secreted; p. pr. &
   vb. n. Secreting.] [L. secretus separated, secret, hidden,
   p. p. of secernere. See Secret, and cf. Discrete,
   Discreet.]
   1. To deposit in a place of hiding; to hide; to conceal; as,
      to secrete stolen goods; to secrete one's self.
      [1913 Webster]

   2. (Physiol.) To separate from the blood and elaborate by the
      process of secretion; to elaborate and emit as a
      secretion. See Secretion.
      [1913 Webster]

            Why one set of cells should secrete bile, another
            urea, and so on, we do not know.      --Carpenter.
      [1913 Webster]

   Syn: To conceal; hide. See Conceal.
        [1913 Webster]

WordNet (r) 3.0 (2006):

secrete
    v 1: generate and separate from cells or bodily fluids; "secrete
         digestive juices"; "release a hormone into the blood
         stream" [syn: secrete, release]
    2: place out of sight; keep secret; "The money was secreted from
       his children"

Moby Thesaurus II by Grady Ward, 1.0:

105 Moby Thesaurus words for "secrete":
   accumulate, amass, backlog, bosom, bottle up, bury, cache,
   camouflage, classify, cloak, collect, conceal, cover, cumulate,
   deposit, discharge, disguise, drain, dribble, drip, drop, effuse,
   egest, eliminate, emanate, embosom, emit, ensconce, enshroud,
   excrete, extravasate, exudate, exude, file and forget, garner,
   garner up, gather into barns, generate, give off, give out,
   heap up, hide, hide away, hoard, hoard up, hold, hold out on,
   in petto, keep, keep back, keep between us, keep buttoned up,
   keep close, keep dark, keep from, keep hidden, keep in ignorance,
   keep mum, keep secret, keep snug, keep under wraps, lactate,
   lay up, leak, lock up, make no sign, mask, never let on,
   not give away, not tell, ooze, pass, pile up, plant, play dumb,
   produce, put away, put up, release, run, save, save up, screen,
   seal up, secern, seep, shroud, squirrel, squirrel away, stash,
   stock up, stockpile, store away, store up, stow away, tear,
   transude, treasure, treasure up, trickle, veil, water, weep,
   withhold, yield