The Collaborative International Dictionary of English v.0.48:

Grease \Grease\ (gr[=e]z or gr[=e]s; 277), v. t. [imp. & p. p.
   Greased (gr[=e]zd or gr[=e]sd); p. pr. & vb. n.
   Greasing.]
   [1913 Webster]
   1. To smear, anoint, or daub, with grease or fat; to
      lubricate; as, to grease the wheels of a wagon.
      [1913 Webster]

   2. To bribe; to corrupt with presents.
      [1913 Webster]

            The greased advocate that grinds the poor. --Dryden.
      [1913 Webster]

   3. To cheat or cozen; to overreach. [Obs.] --Beau. & Fl.
      [1913 Webster]

   4. (Far.) To affect (a horse) with grease, the disease.
      [1913 Webster]

   To grease in the hand, To grease the hand, to corrupt by
      bribes. --Usher.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

greased \greased\ adj.
   smeared with oil or grease to reduce friction; as, a greased
   pig is too slippery to hold.

   Syn: lubricated.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

greased
    adj 1: smeared with oil or grease to reduce friction [syn:
           lubricated, greased] [ant: ungreased,
           unlubricated]