lappet

Short definition from Wiktionary

Noun

1. 1
   A small decorative fold or flap, especially of lace or muslin, in a garment or headdress.
2. 2
   A wattle or flap-like structure on the face.
3. 3
   A head-dress made with lappets for lace pendants.
4. 4
   A lobe (division of an organ).

Verb

1. 1
   To decorate with, or as if with, lappets.