<p><strong>Noun</strong></p><ul><li>a wedge or block of wood, metal, or the like, for filling in a space, holding an object steady, etc.</li><li>Nautical: any of various heavy metal fittings on a deck or wharf that serve as fairleads for cables or chains.</li><li>a shaped support or cradle for a ship's boat, barrel, etc.</li><li>a small wooden piece or timber for filling a gap, reinforcing an angle, etc., in a wooden vessel.</li><li>Metalworking: a bearing supporting the end of a rolling mill.</li><li>Mining: a roof support made of cribbing filled with stones.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to furnish with or secure by a chock or chocks.</li><li>Nautical: to place (a boat) upon chocks.</li></ul><p><strong>Adverb</strong></p><ul><li>as close or tight as possible: chock against the edge.</li></ul>