Dancer (noun)

1. A person who dances professionally or as a leisure activity.
2. A performer who dances, especially as part of a stage show.
3. A pattern of behavior performed by an animal, especially by insects, that is involved in courtship, territorial establishment, or other social interaction.

Origin:

Late middle english: from old french dansere, from danse (see dance).

Examples:

1. She trained to be a dancer from the age of three.
2. The dancers performed a beautiful ballet.
3. Fireflies use light flashes to communicate with each other and to attract mates in a complex pattern of courtship dances.
4. The ballerina was a graceful and talented dancer.
5. The modern dancer blended classical technique with contemporary movement.