Large woman in union crime (6)
I believe the answer is:
bigamy
'union crime' is the definition.
'bigamy' can be an answer for 'crime' (I know that bigamy is a type of statutory offence). I am unsure of the 'union' bit.
'large woman' is the wordplay.
'large' becomes 'big' (synonyms).
'woman' becomes 'amy' ().
'big'+'amy'='BIGAMY'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for bigamy that I've seen before include "Instance of having two spouses" , "Crime of marrying while still married to another" , "Crime involving two better halves!" , "having two husbands?" , "Having more than one spouse, illegally" .)