killer

US /ˈkɪlɚ/

・

UK /ˈkɪlə(r)/

A1 初級

定義動画字幕

n. 難題；殺人者
adj. 死ぬほどおかしい

例文

Heart attacks have become Britain's No. 1 killer disease.

(figurative) Owen delivered the killer blow soon after half-time.