Noun
The pendulous skin under the neck of an ox, which laps or licks the dew in grazing.
The flesh upon the human throat, especially when with age.
Source: Webster's dictionaryThe hybrid foals lacked a dewlap and resembled the plains zebra apart from their larger ears and their hindquarters pattern. Source: Internet
Zebu are characterised by a fatty hump on their shoulders, a large dewlap and sometimes drooping ears. Source: Internet