Costard

Chamber's Twientieth Century Dictionary · 1908 · p. 25

kos′tard, n. a large kind of apple: the human head (contemptuously).— ns. Cos′tardmonger , Cos′ter , Cos′term on ger , a seller of apples and other fruit: an itinerant seller of fruit: a term of abuse. [Perh. from L. costa , a rib.]