Reasons for putting uniform in luggage (6)
I believe the answer is:
causes
'reasons for' is the definition.
'causes' can be an answer for 'reasons' (the reasons for something). I am not sure about the 'for' bit.
'uniform in luggage' is the wordplay.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' means one lot of letters goes inside another.
'luggage' becomes 'cases' (I've seen this before).
'u' placed within 'cases' is 'CAUSES'.
'putting' is the link.
Can you help me to learn more?
(Other definitions for causes that I've seen before include "See 5" , "Origins or crusaders" , "They give rise to effects" , "Reasons why things happen" , "Factors" .)