a deep red, transparent variety of spinel, used as a gem.
a red transparent variety of spinel, used as a gemstone
- Ruby-tail wasp
noun 1. any of various brightly coloured wasps of the family Chrysididae, having a metallic sheen, which parasitize bees and other solitary wasps
- Ruby-throated hummingbird
[roo-bee-throh-tid] /ˈru biˌθroʊ tɪd/ noun 1. a small hummingbird, Archilochus colubris, the only hummingbird of eastern North America, having metallic-green upper plumage and a bright red throat in the male.
abbreviation 1. (the former) Royal Ulster Constabulary, now superseded by the Police Service of Northern Ireland RUC rapid update cycle
noun 1. a strip of pleated lace, net, muslin, or other material for trimming or finishing a dress, as at the collar or sleeves. noun 1. a strip of pleated or frilled lawn, lace, etc, used to decorate blouses, dresses, etc, or worn around the neck like a small ruff as in the 16th century