Spine

spin, n. (Bot.) A sharp proce from the woody part of a plant; a thorn. (Zobl.) A rigid, jointed spike upon any part of an animal. The back-bone or spinal column of an animal. — Spi'nal, a. Pert, to the back-bone. — Spin'y, -I, a. Full of spines; thorny; like a spine; slender; perplexed; difficult; troublesome. — Spi'nous, -nus, -nose', -nos', a. Armed with spines; thorny.— Spinos'ity, -nos'I-tl, n. State of being, etc. — Spinif'erous, -Crus, a. Producing spines. — Spi'nel, -neK, -nelle'', spI-neK, n. A mineral occurring in octohedrons of great hardne . — Spinet, spin'et or spI-neK, n. An obsolete instrument of music resembling a harpsichord; a virginal.