Pertaining to clergymen; or pertaining to the office or labor of a clerk. Clerical error. A mistake in writing or copying; the mistake of a clerk or writer. 1 LA. rCaym. 183. Clerical tonsure. The having the head shaven, which was formerly peculiar to clerks, or persons in orders, and which the cola worn by Serjeants at law are supposed to have been introduced to conceal 1 Bl. Comm. 24, note t; 4 Bl. Comm. 367.