Definition of hook-bill:
(n) :
A rod bent into a curved shape, typically with one end free and the other end secured to a rope or other attachment.
(n) :
A barbed metal hook used for fishing; a fishhook.
(n) :
Any of various hook-shaped agricultural implements such as a billhook.
(n) :
The curved needle used in the art of crochet.
(n) :
The part of a hinge which is fixed to a post, and on which a door or gate hangs and turns.
(n) :
A loop shaped like a hook under certain written letters, for example, g and j.