Around closing time, a boy may take an order (4)
I believe the answer is:
obey
'take an order' is the definition.
'obey' can be an answer for 'take' (thesaurus). I am unsure of the 'an order' bit.
'around closing time a boy' is the wordplay.
'around' is a reversal indicator.
'closing time' becomes 'ye' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a boy' becomes 'bo'.
'ye'+'bo'='yebo'
'yebo' back-to-front is 'OBEY'.
'may' acts as a link.
Can you help me to learn more?
(Other definitions for obey that I've seen before include "Comply with orders" , "Toe the line" , "Comply with (instructions)" , "Heed" , "Hear" .)