Crossword Genius

A few words to start you reading (7)

Ross

I believe the answer is:

caption

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

'start you reading' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'a few words to' is the wordplay.
I cannot quite see how this works, but
'a' is present in the answer.
'few' could be 'i' and 'i' is found within the answer.
'to' is present in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for caption that I've seen before include "Explanatory words or heading" , "Brief description of an illustration" , "Text under photo" , "Legend with a photograph" , "accompanying message" .)

I've seen this clue in the Evening Standard.
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