[f. TREPAN v.1 + -ER1.] One who operates with a trepan.
1727. in Bailey, vol. II.
1775. in Ash; and in later Dicts.
1902. Herald & Review (IL), 18 Feb., 5/5. There has arisen among the Serbs a peculiar profession, that of the ‘medigs,’ or trepanners, who for a moderate fee will bore a hole in your skull and guarantee the wound to heal in two weeks.
