Chitin(n.) A white amorphous horny substance forming the harder part of the outer integument of insects, crustacea, and various other invertebrates; entomolin.
Thesaurus Entries
Philistinism, aegis, armament, armature, armor plate, bard, beaver, body armor, brassard, breastplate, buckler, bulletproof vest, callosity, callousness, callus, chain armor, chain mail, chitin, cloak, coat of mail, coif, corselet, cortex, cover, cuirass, elytron, episperm, flintiness, formidable defenses, gas mask, gauntlet, guard, habergeon, hard heart, hard shell, hardenedness, hardheartedness, hardness, hardness of heart, harness, hauberk, headpiece, heart of stone, helm, helmet, imperviousness, induration, insensitiveness, insensitivity, inuredness, jamb, lorica, lorication, mail, mantle, nasal, needles, obduracy, obdurateness, panoply, pericarp, plate, plate armor, protection, protective covering, rhinoceros hide, rondel, safeguard, screen, scute, scutum, security, shell, shelter, shield, shroud, spines, stoniness, suit of armor, test, testa, thick skin, veil, visor, ward