Full″er (?), n. [AS. fullere, fr. L. fullo. See Full, v. t.] One whose occupation is to full cloth.
Fuller's earth, a variety of clay, used in scouring and cleansing cloth, to imbibe grease. — Fuller's herb(Bot.), the soapwort (Saponaria officinalis), formerly used to remove stains from cloth. — Fuller's thistle or weed(Bot.), the teasel (Dipsacus fullonum) whose burs are used by fullers in dressing cloth. See Teasel.