Fulling, also known as tucking or walking, is a step in woollen clothmaking which involves the cleansing of woven cloth to eliminate oils, dirt, and other impurities, and to make it shrink by friction
Scotswomen walking (fulling) woollen cloth, singing a waulking song, 1772 (engraving made by Thomas Pennant on one of his tours)
Manual trampling, drawing after an Ancient Roman fresco in the Fullonica of Stephanus, Pompeii. A fullonica is a fullery and laundry shop.