The Collaborative International Dictionary of English v.0.48:

Toady \Toad"y\, n.; pl. Toadies. [Shortened from toadeater.]
   1. A mean flatterer; a toadeater; a sycophant.
      [1913 Webster]

            Before I had been standing at the window five
            minutes, they somehow conveyed to me that they were
            all toadies and humbugs.              --Dickens.
      [1913 Webster]

   2. A coarse, rustic woman. [R.] --Sir W. Scott.
      [1913 Webster]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Toady \Toad"y\, v. t. [imp. & p. p. Toadied; p. pr. & vb. n.
   Toadying.]
   To fawn upon with mean sycophancy.
   [1913 Webster]

WordNet (r) 3.0 (2006):

toady
    n 1: a person who tries to please someone in order to gain a
         personal advantage [syn: sycophant, toady, crawler,
         lackey, ass-kisser]
    v 1: try to gain favor by cringing or flattering; "He is always
         kowtowing to his boss" [syn: fawn, toady, truckle,
         bootlick, kowtow, kotow, suck up]

Moby Thesaurus II by Grady Ward, 1.0:

66 Moby Thesaurus words for "toady":
   apple-polish, apple-polisher, ass-licker, backscratcher,
   backslapper, bend the knee, bootlick, bootlicker, bow,
   bow and scrape, brown-nose, brownie, clawback, courtier, cower,
   crawl, creature, creep, cringe, cringer, crouch, dupe, fawn,
   fawner, flatter, flatterer, flunky, follow, footlicker, grovel,
   groveler, handshaker, helot, instrument, jackal, kneel, kowtow,
   kowtower, lackey, led captain, lick the dust, lickspit,
   lickspittle, mealymouth, minion, peon, puppet, serf, slave,
   spaniel, stooge, stoop, suck, sycophant, tag, tail, timeserver,
   toad, toadeat, toadeater, tool, trail, truckle, truckler,
   tufthunter, yes-man