spider, n. araneidan; scorpion, tarantula; pl. Araneina, Arachnida. Associated words: arachnology, arachnologist, araneidan, araneiform, [web], arachnoid, arachnophagous, spinneret, arachnean, falcer, cobweb, cocoon, retiary, arachnidium.
spigot, n. [stopper], [plug], stopple.
spin, v. [whirl], twirl, [revolve], gyrate; protract, prolong, [extend].
spinach, n. Associated word: spinaceous.
spinal, a. vertebral, rachidian.
spinal cord. myelon, myel.
spindle-shaped, a. fusoid, fusiform.
spindling, a. tall and [slender].
spine, n. [backbone], spinal [column], rachis, chine. Associated words: Vertebrata, Invertebrata, vertebra, vertebrate, cyrtosis, chiropractic, chiropractor, spondyle, coccyx, [rickets], ependyma, ependymis.
spineless, a. invertebrate.