(physics) Förster resonance energy transfer

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.

To bind, to tie, originally with a loop or ring. / To fit frets on to (a musical instrument). / To press down the string behind a fret.

(Northumbria) A fog or mist at sea, or coming inland from the sea.

(rare) A channel or passage created by the sea.

(transitive, obsolete or poetic) Especially when describing animals: to consume, devour, or eat. / (transitive) To chafe or irritate; to worry.