エレベーター

How it works

The noun エレベーター (elevator) comes first, written in katakana because it's a loanword. The verb 使う(つかう) (use) takes the volitional ending 〜おう (let's), giving 使おう(つかおう) (let's use) — a casual "let's do it" suggestion you make to a friend. No particle marks the object here; in quick speech it's simply dropped.