Crossword Genius

Give away a transmission system (9)

Ross

I believe the answer is:

telegraph

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'system' is the definition.
(I know that Telegraph is a newspaper)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for telegraph that I've seen before include "System of communication over wires" , "Daily" , "give advance notice" , "A scoreboard" , "Device for transmitting information over distance" .)

I've seen this clue in The Daily Express.
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