chinstrap
chin strap |ˈCHinˌstrap ˈtʃɪnˌstræp | ▶noun a strap attached to a hat, helmet, or other headgear, designed to hold it in place by fitting under the wearer's chin.
chin |strap |ˈtʃɪnstrap | ▶noun a strap attached to a hat, helmet, or other headgear, designed to hold it in place by fitting under the wearer's chin.
ch í n str à p 名詞 C (帽子 ヘルメットなどの )あごひも .