Twivil

Twivil a carpenter’s tool, for making mortise-holes.

Definition taken from The Universal Etymological English Dictionary, edited by Nathan Bailey (1736)

Trundle-tail[next]
Tithing-Men
Tower
Hollow Tower [in Fortification]
Towers [in Coat Armour]
Towˊering long sought [in Cattle]
Train
Train [in Watch-work]
Transpaˊrent Bodies [with Philosophers]
Trinity-House
Trundle-tail
Twivil
Vacuiˊties [with Physicians]