Hypertext Webster Gateway: "drawbar"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Drawbar \Draw"bar`\, n. (Railroad)
(a) An openmouthed bar at the end of a car, which receives
a coupling link and pin by which the car is drawn. It
is usually provided with a spring to give elasticity
to the connection between the cars of a train.
(b) A bar of iron with an eye at each end, or a heavy
link, for coupling a locomotive to a tender or car.
From WordNet (r) 1.7 (wn)
drawbar
n : a strong metal bar bearing a hook to attach something to be
pulled
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