per ‧ form ‧ er /pəˈfɔːmə $ pərˈfɔːrmər/ BrE AmE noun [countable]
[ Word Family: noun : ↑ performance , ↑ performer ; verb : ↑ perform ; adjective : performing]
1 . an actor, musician etc who performs to entertain people:
circus performers
He was a better songwriter than performer.
2 . good/top/poor etc performer
a) someone who does a particular job or activity well or badly:
Star performers are rewarded with bonuses.
b) a product, business etc that makes a lot of money, or that makes very little money:
Newcastle Brown Ale is an outstanding performer in the British beer market.