Supporter to arrive with many others, we hear (5)

I believe the answer is:

pylon

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'supporter' is the definition.
(I have seen 'A supporter' mean 'pylon' so perhaps 'supporter' could also mean 'pylon')

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for pylon that I've seen before include "Electricity cable support" , "current supporter" , "Tower carrying electric cables" , "Electric cable tower" , "Steel structure carrying cables" .)

I've seen this clue in The Independent.

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