<p><strong>Noun:</strong></p><ul><li>Wood, especially oak, and usually in the form of paneling, for lining interior walls.</li><li>The lining itself, especially as covering the lower portion of a wall.</li><li>A dado, especially of wood, lining an interior wall.</li><li>British oak of superior quality and cut, imported from the Baltic countries for fine woodwork.</li></ul><p><strong>Verb:</strong></p><ul><li>To line the walls of (a room, hallway, etc.) with or as if with woodwork: a room wainscoted in oak.</li></ul>