Crosshead

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Crosshead \Cross"head`\ (-h?d), n. (Mach.)
     A beam or bar across the head or end of a rod, etc., or a
     block attached to it and carrying a knuckle pin; as the solid
     crosspiece running between parallel slides, which receives
     motion from the piston of a steam engine and imparts it to
     the connecting rod, which is hinged to the crosshead.


     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  crosshead
       n 1: a heading of a subsection printed within the body of the
            text [syn: {crossheading}]
       2: metal block that connects to a piston; it slides on parallel
          guides and moves a connecting rod back and forth