dewlap

Dew, of unknown meaning and origin, + Old English læppa (“a loose hanging piece”)

This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.

(US) IPA^(key): /ˈdu.læp/, /ˈdju.læp/

(Received Pronunciation) IPA^(key): /ˈdjuː.læp/

dewlap (plural dewlaps)

1. The pendulous skin under the neck of an ox, or a similar feature on any other animal.
   • 1901 – 1902, Arthur Conan Doyle, The Hound of the Baskervilles

     Fire burst from its open mouth, its eyes glowed with a smouldering glare, its muzzle and hackles and dewlap were outlined in flickering flame.

2. The sagging flesh on the human throat of an old person.

• dewclaw - same first root element, "dew"

• pawled