1. an information booth staffed by volunteers; hospital volunteers. 2. A person who renders aid, performs a service, or assumes an obligation voluntarily. 3. A person who holds property under a deed made without consideration. 4. A cultivated plant growing from self-sown or accidentally dropped seed. 5. volunteer firefighters; volunteer tutoring. 6. Growing from self-sown or accidentally dropped seed. Used of a cultivated plant or crop. 7. volunteered their services; volunteer to give blood. 8. To perform or offer to perform a service of one's own free will. 9. Many retirees volunteer in community service and day care centers.
