An'ser, n.

noun

n.; pl. AN'SE-RĒS. [Lat.] (Ornith.) A Linnæan order of natatorial birds swimming by means of web-feet, as the duck, or of lobe-feet, as the grebe. In this order are included the families Alcidæ, Anatidae, Colymbidæ, Loridæ, Pelicanidæ, and Procellaridæ.

a, Anser erythropus; b, Anas anser.