The word “full” is from the Anglo-Saxon fullian, meaning “to whiten.” To full is to press or scour cloth in a mill. This art is one of great antiquity. Mention is made of “fuller’s soap” (Mal. 3:2), and of “the fuller’s field” (2 Kings 18:17). At his transfiguration our Lord’s rainment is said to have been white “so as no fuller on earth could white them” (Mark 9:3). En-rogel (q.v.), meaning literally “foot-fountain,” has been interpreted as the “fuller’s fountain,” because there the fullers trod the cloth with their feet.
Fuller
2 verses
Malachi
Malachi 3:2
But who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner's fire, and like fullers' soap:
Mark
Mark 9:3
And his raiment became shining, exceeding white as snow; so as no fuller on earth can white them.
From Easton's Bible Dictionary
Matthew George Easton, 1897