v. [UNDER-1 4 a.] To extend some way beneath. Hence Underlapping ppl. a.
1867. Dk. Argyll, Reign of Law, iii. 141. The feathers of a bird’s wing are made to underlap each other.
c. 1900. Buck’s Handbk. Med. Sci., IV. 680/2 (Cent. Suppl.). The margin of the underlapping side is sutured to the deep surface of the overlapping side.
