n Either of the two lobes of a whale's or similar creature's tail.
n (nautical) Any of the triangular blades at the end of an anchor, designed to catch the ground.
n A metal hook on the head of certain staffweapons (such as a bill#Etymology 1|bill), made in various forms depending on function, whether used for grappling or to penetrate armour when swung at an opponent.
n In general, a winglike formation on a central piece.