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.
A die; a half-round set hammer, used for forming grooves and spreading iron; -- called also a creaser.
To form a groove or channel in, by a fuller or set hammer; as, to fuller a bayonet.
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