<p><strong>Noun</strong></p><ul><li>A title or heading filling a line or group of lines the full width of the column (Printing).</li><li>A sliding member of a reciprocating engine for keeping the motion of the joint between a piston rod and a connecting rod in a straight line (Machinery).</li><li>A crosspiece on a rudderpost by which the rudder is turned (Nautical).</li><li>A transverse timber for transmitting the lifting effort of two or more jackscrews supporting it to the foot of a shore that it supports (Engineering, Building Trades).</li></ul>