Hypertext Webster Gateway: "crosshead"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
From WordNet (r) 1.7 (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
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