- a large English variety of apple.
- Archaic. the head.
Origin of costard
- an English variety of apple tree
- the large ribbed apple of this tree
- archaic, jocular a slang word for head
Word Origin for costard
late 13c., coster, perhaps from Anglo-French or Old French coste "rib" (from Latin costa "a rib;" see coast (n.)). A kind of large apple with prominent "ribs," i.e. one having a shape more like a green pepper than a plain, round apple. Also applied derisively to "the head." Common 14c.-17c. but limited to fruit-growers afterward.