Other forms: bluebirds
A bluebird is a small blue North American songbird. A bluebird on the fence.
It nests in holes and has recovered from near collapse because people put up boxes for it. The bluebird of happiness is a symbol from a Belgian play of 1908.
1nounbluebirdA small blue North American songbird.
“A bluebird used the same box for four seasons running.”
bluebird is a bird.
Blue plus bird, named for the colour of the male.
From blue + bird.
Etymology from Wiktionary, CC BY-SA