danc ‧ er /ˈdɑːnsə $ ˈdænsər/ BrE AmE noun [countable]
1 . someone who dances as a profession:
The dancer’s technique is strong.
ballet/ballroom/flamenco etc dancer
Margot Fonteyn, the famous British ballet dancer
2 . someone who dances:
the dancers on the floor
good/bad dancer
Dave’s a good dancer.