‖n. [ L., small bird. ] (Zool.) A genus of marine bivalves, having a pearly interior, allied to the pearl oyster; -- so called from a supposed resemblance of the typical species to a bird. [ 1913 Webster ]

a. [ L. avicula a small bird, dim. of avis bird. ] Of or pertaining to a bird or to birds. [ 1913 Webster ]

‖n. pl. [ NL. See Avicular. ] (Zool.) See prehensile processes on the cells of some Bryozoa, often having the shape of a bird's bill. [ 1913 Webster ]

a. [ Cf. F. claviculaire. See Clavicle. ] (Anat.) Of or pertaining to the clavicle. [ 1913 Webster ]

a. [ Infra + clavicular. ] (Anat.) Below the clavicle; as, the infraclavicular fossa. [ 1913 Webster ]

a. (Anat.) (a) Between the clavicles; as, the interclavicular notch of the sternum. (b) Of or pertaining to the interclavicle. [ 1913 Webster ]

n. (Anat.) The navicular bone. [ 1913 Webster ]

a. [ L. navicularius, fr. navicula, dim. of navis ship: cf. F. naviculaire. ] 1. Of, pertaining to, or resembling, a boat or ship. [ 1913 Webster ]

2. Shaped like a boat; cymbiform; scaphoid; as, the navicular glumes of most grasses; the navicular bone. [ 1913 Webster ]

Navicular bone. (Anat.) (a) One of the middle bones of the tarsus, corresponding to the centrale; -- called also scaphoid. (b) A proximal bone on the radial side of the carpus; the scaphoid. --
Navicular disease (Far.), a disease affecting the navicular bone, or the adjacent parts, in a horse's foot. [ 1913 Webster ]

‖n.; pl. Pseudonaviculæ [ NL., fr. Gr. pseydh`s false + NL. navicula, a genus of diatoms. See Navicular. ] (Zool.) One of the minute spindle-shaped embryos of Gregarinæ and some other Protozoa. [ 1913 Webster ]

a. (Anat.) (a) Situated above the clavicle. (b) Of or pertaining to the supraclavicle. [ 1913 Webster ]