dagger
Word family noundaggerboarddagger
dag·ger /ˈdæɡə $ -ər/ noun [countableC] 2. look daggers at somebody informalLOOK AT to look at someone angrily 对某人怒目而视 3. be at daggers drawn ANGRYif two people are at daggers drawn, they are extremely angry with each other 势不两立,剑拔弩张 → cloak-and-dagger Origin dagger (1300-1400) Perhaps from dag “to push a knife into” ((14-18 centuries))