These egg boxes detect surroundings (3)
I believe the answer is:
see
'detect surroundings' is the definition.
'see' can be an answer for 'detect' (I've seen this in another clue). I am not certain of the 'surroundings' bit.
'these egg boxes' is the wordplay.
'boxes' says the answer is hidden in the clue (to box can mean to contain).
'SEE' is hidden in the letters of 'these egg'.
Can you help me to learn more?
(Other definitions for see that I've seen before include "Observe the bishop's jurisdiction" , "Visualise" , "Go out with; notice" , "Observe the papacy in Rome" , "Bishop's area of control" .)