D defs.my
Entry 3 senses Webster, 1913

Lancer

/lăn'-sẽr/ · Lan·cer · IPA /lˈænsər/
01 n. One who lances; one who carries a lance; especially, a member of a mounted body of men armed with lances, attached to the cavalry service o…
  1. 1.
    One who lances; one who carries a lance; especially, a member of a mounted body of men armed with lances, attached to the cavalry service of some nations.
  2. 2.
    A lancet.[Obs.]
  3. 3.
    A set of quadrilles of a certain arrangement.(Dancing)