the world > space > relative position > support > [noun] > that which supports > projecting bracket > on a pole or pillar (4)
(a) = saddle rack n.; †(b) Telegraphy = sense 6g (obsolete).
(a) a bracket with a support in the form of a short upright column or pillar; (more widely) a free-standing upright mechanical support; (b) a…
Technical senses. Telegraphy. A bracket to support a telegraph wire on a pole or roof ridge. Obsolete.
a bracket on a telegraph pole for supporting the wires.