definition of
volunteer

[1] #1 volunteer v. tell voluntarily; "He volunteered the information". wn

[2] #2 volunteer n. [military volunteer, voluntary] (military) a person who freely enlists for service. wn

[3] #3 volunteer v. [offer] agree freely; "She volunteered to drive the old lady home"; "I offered to help with the dishes but the hostess would not hear of it". wn

[4] #4 volunteer v. do volunteer work. wn

[5] #5 volunteer n. [unpaid worker] a person who performs voluntary work. wn