ham ‧ mer ‧ ing /ˈhæmərɪŋ/ BrE AmE noun [singular, uncountable]
1 . take a hammering/be given a hammering to be attacked or defeated very severely:
The city took a real hammering during the war.
2 . the sound of someone hitting something with a hammer or with their hands:
There was a loud hammering at the door.