lock horns (with somebody) (over something)成語所屬單字locklock horns (with somebody) (over something)lock horns (with somebody) (over something) — 慣用語慣用語1. To start arguing or fighting with someone about something.1.慣用語釋義與某人爭論To start arguing or fighting with someone about something.例句The two politicians locked horns over the new tax plan.Why did you lock horns with your boss about the deadline?