lappet

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A decorative flap or loose fold on a garment or headdress.
• noun A flaplike structure, such as the wattle of a bird or the lobe of the ear.

from The Century Dictionary.

• noun An obsolete form of lap.
• To cover with or as with a lappet.
• A little lap, flap, or pendant, especially on a coat or a head-dress.
• In ornithology, a wattle or other fleshy process hanging from a bird's head.
• One of certain bombycid moths, as Lasiocampa quercifolia: an English book-name. The small lappet is
• noun In biology, a small lobe-shaped organ, such as the lappets of certain nemertean larvæ, etc.
• noun Same as tegula.
• noun In paleontology, an ear-like crest formed in some nautiloid cephalopods, as Lituites and Ophidioceras, by an extension of the lateral margins of the aperture of the shell.

from the GNU version of the Collaborative International Dictionary of English.

• noun A small decorative fold or flap, esp. of lace or muslin, in a garment or headdress.
• noun (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.
• transitive verb rare To decorate with, or as with, a lappet.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A small decorative fold or flap, especially of lace or muslin, in a garment or headdress.
• verb transitive To decorate with, or as if with, lappets.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a fleshy wrinkled and often brightly colored fold of skin hanging from the neck or throat of certain birds (chickens and turkeys) or lizards
• noun medium-sized hairy moths; larvae are lappet caterpillars
• noun a small lap on a garment or headdress