a pivoted fin keel that can be swung upward and aft within a watertight trunk when not in use.
the area of the outfield beyond second base and between right field and left field. the position of the player covering this area. Historical Examples
the player whose position is center field. Historical Examples
(of a cartridge) having the primer in the center of the base. Compare rimfire (def 1). (of firearms) designed for the use of such cartridges. Historical Examples
an offensive player who covers the center of the field and who usually starts the kickoff. noun this player position in certain sports