Lappet \Lap"pet\, n. [Dim. of lap a fold.]

A small decorative fold or flap, esp, of lace or muslin, in a garment or headdress. --Swift.

Lappet moth (Zo["o]l.), 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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Lappet \Lap"pet\, v. t. [imp. & p. p. Lappeted; p. pr. & vb. n. Lappeting.]

To decorate with, or as with, a lappet. [R.]

--Landor.

Source: Webster's Revised Unabridged Dictionary (1913)