Kinswoman in uniform soldier brought round (4)
I believe the answer is:
aunt
'kinswoman' is the definition.
(aunt is a kind of kinswoman)
'uniform soldier brought round' is the wordplay.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'soldier' becomes 'ant' (soldier is a type of ant).
'brought round' indicates putting letters inside.
'u' going inside 'ant' is 'AUNT'.
'in' acts as a link.
(Other definitions for aunt that I've seen before include "Uncle's wife" , "Charley's ___ , farce staged in London in 1892, revived and adapted ever since" , "Tuna (anag.)" , "Family relative" , "Blood relative" .)