DictionaryRoot: cammaeus
Latin
cammaeus
relief engraving on a precious stone
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noun
cameo
KAM-ee-oh/ˈkæmiəʊ/
A brief, vivid contribution within a larger work.
Etymology
A cameo was a small carving that stood out in relief. Through the sense 'short literary sketch or portrait,' it came to mean a small but distinctive performance that stands out among minor parts.