fuller,
n. [AS.
fullere, fr. L.
fullo. See
Full,
v. t.].
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 Fuller's weed (Bot.), the teasel (Dipsacus fullonum) whose burs are used by fullers in dressing cloth. See Teasel.