noun Usage: often capitalized E Date: 1937 a bluebird ( Sialia sialis ) chiefly of eastern North America that has a reddish-brown throat and breast
EASTERN BLUEBIRD
Meaning of EASTERN BLUEBIRD in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012