Any bird of the order Passeriformes, which comprises more than half of all bird species.

Of, or relating to a passerine or perching bird.

plural of passerine

Of or pertaining to a sparrow; sparrow-like; bird-like.

Any bird of the order Passeriformes.

plural of passerid

(zoology) Any member of the family Passeridae of sparrows and their close relatives.

plural of passeriform

(ornithology) Of or relating to the Passerida.