Crossword Genius

Salesman tucks in - second helpings? (7)

Ross

I believe the answer is:

repeats

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'second helpings?' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how one could define the other.

'salesman tucks in' is the wordplay.
'salesman' becomes 'rep' (sales representative).
'tucks in' becomes 'eats' (I've seen this in another clue).
'rep'+'eats'='REPEATS'

Can you help me to learn more?

(Other definitions for repeats that I've seen before include "Says again" , "Performs again" , "Duplicates" , "Reiterates" , "States again" .)

I've seen this clue in The Independent.
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