simple past tense and past participle of fret

(music, of a musical instrument) Having frets. / Decorated with fretwork.

(physics) Förster resonance energy transfer

present participle of fret

Action of the verb to fret.

A channel, a strait; a fretum.

(obsolete or dialectal) A ferrule, a ring.

An ornamental pattern consisting of repeated vertical and horizontal lines, often in relief. / (heraldry) A saltire interlaced with a mascle.

Agitation of the surface of a fluid by fermentation or some other cause; a rippling on the surface of water. / Agitation of the mind marked by complaint and impatience; disturbance of temper; irritation.

(transitive) To decorate or ornament, especially with an interlaced or interwoven pattern, or (architecture) with carving or relief (raised) work. / (transitive) To form a pattern on; to variegate.