Rio Negro(redirected from Guainía River)
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Río Negro(ˈriːəʊ ˈneɪɡrəʊ; ˈnɛɡ-; Spanish ˈrio ˈneɣro)
(Placename) See Negro2
n., pl. -groes,
adj. Older Use: Sometimes Offensive. n.
1. a member of any of the indigenous peoples of sub-Saharan Africa, or one of their descendants.adj.
2. of or designating Negroes.
[1545–55; < Sp and Portuguese negro black < Latin nigrum, masculine acc. of niger black]
usage: See black.
Ne•gro2(ˈneɪ groʊ; Sp. ˈnɛ grɔ)
; Port. ne′gro͝o),
1. a river in NW South America, flowing SE from Colombia into the Amazon. 1400 mi. (2255 km) long.
2. a river in S Argentina, flowing E from the Andes to the Atlantic. 700 mi. (1125 km) long.
3. a river in SE South America, flowing SW from Brazil into the Uruguay River. ab. 500 mi. (800 km) long.Portuguese, Rio Negro. Spanish, Río Negro.