<p><strong>Noun</strong></p><ul><li>Anatomy: the spinal column; spine</li><li>strength of character; resolution</li></ul><p><strong>Synonyms</strong></p><ul><li><p>firmness</p></li><li><p>fortitude</p></li><li><p>decision</p></li><li><p>something resembling a backbone in appearance, position, or function</p></li><li><p>Bookbinding: a back or bound edge of a book; spine</p></li><li><p>Nautical: a rope running along the middle of an awning, as a reinforcement and as an object to which a supporting bridle or crowfoot may be attached</p></li><li><p>Naval Architecture: the central fore-and-aft assembly of the keel and keelson, giving longitudinal strength to the bottom of a vessel</p></li></ul>