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 (Cent. Suppl.). The margin of the underlapping side is sutured to the deep surface of the overlapping side.
