1. 舞蹈演员;舞蹈家;跳舞者
A dancer is a person who earns money by dancing, or a person who is dancing.

2. （出色或蹩脚的）舞者
If you say that someone is a good dancer or a bad dancer, you are saying how well or badly they can dance.

1. a performer who dances professionally

Synonym: professional dancerterpsichorean

2. a person who participates in a social gathering arranged for dancing (as a ball)

Synonym: social dancer