Definify.com
Webster 1913 Edition
Twibil
Twi′bil
,Noun.
1.
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.
[Prov. Eng.]
2.
A tool for making mortises.
[Obs.]
3.
A reaping hook.
Webster 1828 Edition
Twibil
TWI'BIL
,Noun.