noun
(weaponry) A medieval polearm, fitted to a long handle, sometimes with an L-shaped tine or a spike protruding from the side or the end of the blade for tackling the opponent; a bill.
An agricultural hand tool often with a curved or hooked end to the blade used for pruning or cutting thick, woody plants.
(often written as bill-hook) A part of the knotting mechanism in a reaper-binder or baler (agricultural machinery).
Rare form of bill hook (“spiked hook used in shops for hanging papers”).
Rare form of bill hook (“sharply pointed spike on honeyguide hatchlings' mandibles”).
verb
To use a billhook.