fretwork

[ fret-wurk ]
/ ˈfrɛtˌwɜrk /

noun

ornamental work consisting of interlacing parts, especially work in which the design is formed by perforation.
any pattern of dark and light, such as that of perforated fretwork.

Origin of fretwork

First recorded in 1595–1605; fret2 + work
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for fretwork

fretwork

/ (ˈfrɛtˌwɜːk) /

noun

decorative geometrical carving or openwork
any similar pattern of light and dark
ornamental work of three-dimensional frets
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012