Definition of "cross-arm" []

• A cross-piece; an arm or bracket which crosses a pole or post: used on poles to carry wires and keep them separated. (noun)

The Century Dictionary (Public Domain)

• "One at their van bore the standard, a pole from whose cross-arm hung-tails of oxen?"
• "One at their van bore the standard, a pole from whose cross-arm hung'tails of oxen?"
• "In addition, some 500 insulators, H.T. fuses, lightning arrestors, earthing sets and a metal cross-arm and top-cap for each pole, are required."