Royal broadcast copies (6)

I believe the answer is:

prince

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This could be a double definition.

'royal' is the first definition.
(prince is a kind of royal)

'broadcast copies' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

Can you help me to learn more?

(Other definitions for prince that I've seen before include "Boxer Naseem Hamed's "title"" , "Son of a sovereign" , "eg William or Harry" , "King's son" , "Son of a royal house" .)

I've seen this clue in The Guardian.

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