mortise
Concise Oxford English Dictionary © 2008 Oxford University Press:
mortise /ˈmɔːtɪs/ (also mortice)
▶noun a hole or recess designed to receive a corresponding projection (a tenon) so as to join or lock two parts together. ▶verb join securely by means of a mortise and tenon.
■ (often as adj. mortised) cut a mortise in or through.
– derivatives
mortiser noun.
mortiser noun.
– origin ME: from OFr. mortaise.
'mortise' also found in these Oxford entries:

