or FRETTE, in Architecture, a kind of knot or ornament, consisting of two lists or small fillets variously interlaced or interwoven, and running at parallel distances equal to their breadth.

in Heraldry, a bearing composed of six bars, crossed and variously interlaced. Some call it the true-lover's knot. See HERALDRY.

in Music, signifies a kind of stop on some instruments, particularly bass viol and lutes. Frets consist of strings tied round the neck of the instrument, at certain distances, within which such and such notes are to be found.

Work, that adorned with frets. It is sometimes used to fill up and enrich flat empty spaces; but it is mostly practised in roofs, which are fretted over with plaster work.

FRETT'S, in Mineralogy, a term used by our miners to express the worn side of the banks of the rivers in mine countries, where they search for the flood stones or greuts washed down from the hills, in order from thence to trace out the running of the flood up to the mine.