Crossword Genius

Line from radio programme on which luvvies should appear? (3)

Ross

I believe the answer is:

cue

I'm a little stuck... Click here to teach me more about this clue!

This might be a double definition.

'line' is the first definition.
(I know that cue is a type of words)

'radio programme on which luvvies should appear?' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I don't see?

'from' acts as a link.

Can you help me to learn more?

(Other definitions for cue that I've seen before include "Signal for action" , "Snooker rod" , "Reminder to do something" , "Hint, prompt" , "Signal for player" .)

I've seen this clue in The Telegraph.
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