beat ‧ er /ˈbiːtə $ -ər/ BrE AmE noun [countable]
1 . an object that is designed to beat something:
an egg beater
a carpet beater
2 . wife/child beater someone who hits his wife or child, especially someone who does this often
3 . someone who forces wild birds or animals out of bushes, long grass etc so that they can be shot for sport
4 . American English informal an old car in bad condition
⇨ ↑ world-beater