Source : Webster's Revised Unabridged Dictionary (1913)

Cargoose \Car"goose`\, n. [Perh. fr. Gael. & Ir. cir, cior
   (pronounced kir, kior), crest, comb + E. goose. Cf. {Crebe}.]
   (Zo["o]l.)
   A species of grebe ({Podiceps crisratus}); the crested grebe.