n. In ornithology: [lowercase] A name of the common guinea-fowl, to which Linnæus gave the technical specific name Numida meleagris.n. An American genus of Phasianidæ or Meleagridæ, of large size with varied metallic plumage, naked tarsi spurred in the male, bare head with erectile fleshy caruncles, and a tuft of hair-like feathers on the breast; the turkeys.n. In conchology, a genus of mollusks: same as Meleagrina.