Noun
A strip of leather or material used to fasten a hat or helmet under the chin.
A form of beard that follows the jawline but does not cover the rest of the chin.
Synonym: chin strip
A band of colour below a bird's mouth, resembling the chinstrap of a helmet.
Source: en.wiktionary.orgWith frequent eruptions, the most recent of which occurring in 1992, this volcano is now the home to Antarctic Fur Seals, Southern Elephant Seals and the world’s largest colony of Chinstrap Penguins. Source: Internet