TREPAN (2)

trepan (2). Trepan, v.t. to cut with a trepan, catch, entrap

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Tre‐pan″, v. t. & i. [imp. & p. p. Trepanned (?); p. pr. & vb. n. Trepanning.] [[Cf. F. trépaner. 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.