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American Dictionary of the English Language

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Trephine


TREPH'INE, noun [See Trepan.] An instrument for trepanning, more modern than the trepan. It is a circular or cylindrical saw, with a handle like that of a gimblet, and a little sharp perforator, called the center-pin.

TREPH'INE, verb transitive To perforate with a trephine; to trepan.