| 1. | Printing. a title or heading filling a line or group of lines the full width of the column. |
| 2. | Machinery. 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. |
| 3. | Nautical. a crosspiece on a rudderpost by which the rudder is turned. |
| 4. | Engineering, Building Trades. a transverse timber for transmitting the lifting effort of two or more jackscrews supporting it to the foot of a shore that it supports. Compare shore 2 (def. 1). |