cinereous

1. (chiefly ornithology) Of an ash-gray colour.Examples: "With a bill two inches and a half long , very ſlender , and a little recurvated : head , and upper part of neck , cinereous , with dusky lines : over each eye a white line"; "Coluber cinereus, the cinereous viper; a native cf South America and India; of a cinereous grey colour; the abdomen white, angulated ; the scales of the tail ferruginous at the edges."; "Wings tailed, white, with a brown border; beneath varied with ferruginous and yellow, the lower ones with two cinereous streaks."Synonyms: ashen