Twi"bil (?), n. [AS. twibill; twi- (in comp.) two + bill, bil, an ax hoe, bill. See Twice, and Bill a cutting instrument.]
A kind of mattock, or ax; esp., a tool like a pickax, but having, instead of the points, flat terminations, one of which is parallel to the handle, the other perpendicular to it.
A tool for making mortises.
A reaping hook.
© Webster 1913.