Source : Webster's Revised Unabridged Dictionary (1913)

Lackey \Lack"ey\, n.; pl. {Lackeys}. [F. laquais; cf. Sp. & Pg.
   lacayo; of uncertain origin; perh. of German origin, and akin
   to E. lick, v.]
   An attending male servant; a footman; a servile follower.

         Like a Christian footboy or a gentleman's lackey.
                                                  --Shak.

   {Lackey caterpillar} (Zo["o]l.), the caterpillar, or larva,
      of any bombycid moth of the genus {Clisiocampa}; -- so
      called from its party-colored markings. The common
      European species ({C. neustria}) is striped with blue,
      yellow, and red, with a white line on the back. The
      American species ({C. Americana} and {C. sylvatica}) are
      commonly called {tent caterpillars}. See {Tent
      caterpillar}, under {Tent}.

   {Lackey moth} (Zo["o]l.), the moth which produces the lackey
      caterpillar.

Lackey \Lack"ey\, v. t.
   To attend as a lackey; to wait upon.

         A thousand liveried angels lackey her.   --Milton.

Lackey \Lack"ey\, v. i. [imp. & p. p. {Lackeyed}; p. pr. & vb.
   n. {Lackeying}.]
   To act or serve as lackey; to pay servile attendance.

Source : WordNet®

lackey
     n 1: a male servant (especially a footman) [syn: {flunky}, {flunkey}]
     2: a person who tries to please someone in order to gain a
        personal advantage [syn: {sycophant}, {toady}, {crawler}]