For meals, leaves one's school in grassy area (5,5)
I believe the answer is:
swiss chard
'for meals leaves' is the definition.
I can't tell whether this defines the answer.
'one's school in grassy area' is the wordplay.
'one's' becomes 'I's' (Roman numeral).
'school' becomes 'sch' (abbreviation).
'in' indicates putting letters inside.
'grassy area' becomes 'sward' (I've seen this before).
'is'+'sch'='issch'
'issch' put inside 'sward' is 'SWISS CHARD'.
Can you help me to learn more?
(Another definition for swiss chard that I've seen is " Beet with edible leaves".)