Crosshead
Pronunciation : Cross"head` (-hd)
Part of Speech : n.
Definition : Defn: 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.
(Mach.)
Source : Webster's Unabridged Dictionary, 1913