Source : Webster's Revised Unabridged Dictionary (1913)

Lancegay \Lance"gay`\, Lancegaye \Lance"gaye`\, n. [OF.
   lancegaie, corrupted from the same source as E. assagai,
   under the influence of F. lance lance. See {Assagai}.]
   A kind of spear anciently used. Its use was prohibited by a
   statute of Richard II. --Nares.

         In his hand a launcegay, A long sword by his side.
                                                  --Chaucer.