American lawyer to call for courage (6)
I believe the answer is:
daring
'courage' is the definition.
(daring is a kind of courage)
'american lawyer to call' is the wordplay.
'american lawyer' becomes 'da' (abbreviation for District Attorney).
'to call' becomes 'ring' ('ring' can be a synonym of 'call').
'da'+'ring'='DARING'
'for' is the link.
(Other definitions for daring that I've seen before include "Audacity" , "Impudent - brave - courage" , "Challenging or defying" , "Bold, willing to take chance" , "Intrepid" .)