Every one is packed in a tea chest (4)
I believe the answer is:
each
'every one' is the definition.
(I've seen this before)
'in a tea chest' is the wordplay.
'in' indicates a hidden word.
'EACH' is hidden in the letters of 'tea chest'.
'is packed' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for each that I've seen before include "every one individually" , "every individual" , "This way for a place" , "Per person" , "Every one of a number" .)