9. The main part of a plow, to which the handles and colter are secured, and to the end of which are attached the oxen or horses that draw it.
10. (Steam Engine) A heavy iron lever having an oscillating motion on a central axis, one end of which is connected with the piston rod from which it receives motion, and the other with the crank of the wheel shaft; -- called also working beam or walking beam.
11. A ray or collection of parallel rays emitted from the sun or other luminous body; as, a beam of light, or of heat.
How far that little candle throws his beams!
Shak.