Taken medium English vegetable boxes (7)
I believe the answer is:
charmed
'taken medium english vegetable boxes' is the definition.
The definition and answer can be both to do with communicating as well as being past participle verbs.
Perhaps there's a link between them I don't understand?
'medium english vegetable boxes' is the wordplay.
'medium' becomes 'm' (as in UK clothing sizes).
'english' becomes 'e' (abbreviation).
'vegetable' becomes 'chard' (chard is a kind of vegetable**).
'boxes' means one lot of letters goes inside another (the outside letters must 'box' inside letters in).
'm'+'e'='me'
'me' placed inside 'chard' is 'CHARMED'.
Can you help me to learn more?
(Other definitions for charmed that I've seen before include "blessed by fortune" , "Entranced" , "Unusually lucky" , "Enchanted" .)