'Trepanning' definitions:
Definition of 'Trepanning'
From: GCIDE
- Trepan \Tre*pan"\, v. t. & i. [imp. & p. p. Trepanned; p. pr. & vb. n. Trepanning.] [Cf. F. tr['e]paner. See Trepan a saw.] (Surg.) To perforate (the skull) with a trepan, so as to remove a portion of the bone, and thus relieve the brain from pressure or irritation; to perform an operation with the trepan. [1913 Webster]