CIDE DICTIONARY
lappet, n. [Dim. of lap a fold.].
A small decorative fold or flap, esp. of lace or muslin, in a garment or headdress. Swift. [1913 Webster]
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.
lappet, v. t.
To decorate with, or as with, a lappet. Landor. [1913 Webster]
THESAURUS
lappet
crease, creasing, crimp, dog-ear, double, doubling, drape, duplicature, ear lobe, flection, flexure, flounce, fold, frill, gather, hanger, hanging, lapel, lobation, lobe, lobule, pendant, plica, plication, plicature, ply, ruche, ruching, ruffle, tuck, uvula
ROGET THESAURUS
lappet
Adjunct
N
adjunct, addition, additament, additum, affix, appelidage, annexe, annex, augment, augmentation, increment, reinforcement, supernumerary, accessory, item, garnish, sauce, accompaniment, adjective, addendum, complement, supplement, continuation, rider, offshoot, episode, side issue, corollary, piece, flap,
lappet, skirt, embroidery, trappings, cortege, tail, suffix, wing, additional, alate, alated, winged, in addition.