Definitions

1. noun

a person who freely offers to take part in an activity or task, especially one that benefits others or is for charity.

“She is a volunteer at the local animal shelter.”

2. verb

to offer to do something, especially to help someone or a cause, without being paid.

“He volunteered to help his neighbor with the move.”

3. noun

a person who participates in a military force without being a member of the regular armed forces.

“The volunteer soldiers fought bravely in the war.”

4. noun

a person who takes part in a sporting event or activity, especially one that is not part of the official competition.

“The volunteers helped to organize the charity fun run.”