shill

from WordNet (r) 3.0 (2006)

shill
    n 1: a decoy who acts as an enthusiastic customer in order to
         stimulate the participation of others
    v 1: act as a shill; "The shill bid for the expensive carpet
         during the auction in order to drive the price up"

from The Collaborative International Dictionary of English v.0.48

Shill \Shill\, v. t.
   To shell. [Obs. or Prov. Eng.]
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Shill \Shill\, v. t. [Cf. {Sheal}.]
   To put under cover; to sheal. [Prov.ng.] --Brockett.
   [1913 Webster] Shillalah

from Moby Thesaurus II by Grady Ward, 1.0

19 Moby Thesaurus words for "shill":
      agent provocateur, bid, bid in, bid up, blind, bonnet, booster,
      by-bidder, capper, come-on man, decoy, make a bid, make an offer,
      offer, offer to buy, plant, stick, stool pigeon, stoolie

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