deerstalker
noun [ C ] uk/ˈdɪəˌstɔː.kər/ us/ˈdɪrˌstɑː.kɚ/
猎鹿帽（前后各有一帽舌，两侧有可翻下遮耳的部分）
a soft hat with two peaks (= flat curved parts that stick out), one at the back and one at the front, and coverings for the ears that are usually worn turned up
Sherlock Holmes's deerstalker 夏洛克‧福尔摩斯的猎鹿帽