porcupine n any of various large hystricomorph rodents of the families Hystricidae, of Africa, Indonesia, S Europe, and S Asia, and Erethizontidae, of the New World. All species have a body covering of protective spines or quills (C14 porc despyne pig with spines, from Old French porc espin; see pork, spine)
n any of various plectognath fishes of the genus Diodon and related genera, of temperate and tropical seas, having a body that is covered with sharp spines and can be inflated into a globe: family Diodontidae, (Also called)
n (Austral) another name for →
pl n (Finance) provisions, such as poison pills or staggered directorships, made in the bylaws of a company to deter takeover bids, (Also called)
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