a performer who dances professionally
"The renowned dancer took center stage to perform her signature routine for an adoring crowd."
a person who participates in a social gathering arranged for dancing (as a ball)
"At the grand ball, every dancer moved gracefully to the waltz under the chandeliers."
A person who dances, usually as a job or profession.
"The dancer performed her solo routine on stage to an enthusiastic crowd."
In plain English: A dancer is someone who moves their body to music as part of a performance or for fun.
"The talented dancer moved gracefully across the stage during the final performance."
Usage: Use this term to refer specifically to someone whose primary occupation is dancing rather than an occasional hobbyist. It applies equally to professionals in ballet, jazz, and contemporary styles without implying any specific skill level.
The second reindeer of Santa Claus.
"Dancer is not a synonym for any reindeer in traditional lore, so no natural sentence can be written to demonstrate that specific definition without fabricating false information about the word's actual usage."
The word comes from Middle English and originally meant a person who dances. It was formed by adding the suffix "-er" to the verb "dance."