a form of influenza occurring in poultry mainly in Japan, China and Southeast Asia, caused by a virus capable of spreading to humans Also called avian flu
A Scarier Bird Flu: CDC Chief Warns of Looming H7N9 Threat Eliza Shapiro September 15, 2013
a violet, Viola pedata, of the eastern and midwestern U.S., having single flowers with a yellow center, two purple upper petals, and three lavender lower petals: the state flower of Wisconsin.
a grass, Poa trivialis, grown in temperate regions of North America largely for lawns and turf. the knotgrass, Polygonum aviculare.
The individual sought has gone away, as in Jean hoped to meet her editor at long last, but when she arrived the bird had flown. This idiom has been used for an escaped prisoner, and more generally, as in 1655 by William Gurnall (The Christian in Complete Armour): “Man … knows not his time … […]