part of speech: noun

definition: an animal with two wings, two feet, and a body covered with feathers. Most birds can fly. Birds are warm-blooded animals with skeletons inside their bodies. Birds lay eggs with hard shells. Robins, eagles, chickens, and ostriches are a few of the many kinds of birds.

phrase: birds of a feather

phrase: kill two birds with one stone

derivation: birdlike (adj.)