Busy chap's gathering in leaves to eat (7)

I believe the answer is:

spinach

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'leaves to eat' is the definition.
I can't judge whether this definition defines the answer.

'busy chap's gathering in' is the wordplay.
'busy' indicates an anagram.
'gathering' means one lot of letters goes inside another.
'chaps' with letters rearranged gives 'spach'.
'spach' enclosing 'in' is 'SPINACH'.

Can you help me to learn more?

(Other definitions for spinach that I've seen before include "Dark green vegetable" , "Popeye's vegetable" , "Blackboard stand" , "something to eat" , "Vegetable plant" .)

I've seen this clue in The Daily Mail.

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