A clasp, buckle, fibula, or brooch, especially one set with precious stones, for holding together the two sides of a garment; (hence) a clasped necklace, bracelet, or the like. Also, in later use: a buckle or brooch worn as an ornament; (more generally) a gem, jewel, or precious ornament.
Late Middle English; earliest use found in The Wycliffite Bible (early version). From Anglo-Norman and Old French nusche clasp, buckle, fibula, brooch from a form in a Germanic language cognate with Middle Dutch nuchssce (transmission error for *nusche), Middle Low German nusche, Old High German nusca, nuska (Middle High German nusche, nuske, German (now historical) Nusche, Nüsche), Langobardic nuska, nuskja clasp, buckle, fibula, brooch from a suffixed form of the Indo-European base of net.
To set or adorn with, or as with, ouches; to spangle; to set like a jewel. Usually in past participle.
Early 18th century; earliest use found in Edward Taylor. From ouche.