a small bar of metal across the fingerboard of a musical instrument; when the string is stopped by a finger at the metal bar it will produce a note of the desired pitch(noun.artifact)
source: wordnet30
See 1st Frith.(noun)
source: webster1913
The agitation of the surface of a fluid by fermentation or other cause; a rippling on the surface of water.(noun)
source: webster1913
Ornamental work in relief, as carving or embossing. See Fretwork.(noun)