LAPPET n.
A small decorative fold or flap, esp, of lace or muslin, in a garment or headdress. Swift. Lappet moth (Zoöl.), one of several species of bombycid moths, which have stout, hairy caterpillars, flat beneath. Two common American species (Gastropacha Americana, and Tolype velleda) feed upon the apple tree.…
VALVE n.
One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves.