Married Yorkshire banker? Something clicked! (5)
I believe the answer is:
mouse
'banker? something clicked' is the definition.
I can't tell whether this defines the answer.
'married yorkshire' is the wordplay.
'married' becomes 'm'.
'yorkshire' becomes 'ouse' (I am not sure about this - if you are sure you should believe this answer much more).
'm'+'ouse'='MOUSE'
Can you help me to learn more?
(Other definitions for mouse that I've seen before include "Quiet person" , "Domestic rodent" , "shy and timid type" , "computer equipment" , "Timid fellow" .)