Easton's Bible Dictionary: M. G. Easton, M.A., D.D.

Free-will offering

A spontaneous gift (Ex. 35:29), a voluntary sacrifice (Lev. 22:23; Ezra 3:5), as opposed to one in consequence of a vow, or in expiation of some offence.

Original from The Bible Foundation - bf.org. They claim public domain status for their original text.