German currency (4)
I believe the answer is:
mark
'german currency' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mark that I've seen before include "Characteristic" , "Target; become stained" , "Note Germany currency" , "Spot - old German coin - apostle" , "[BOOK] of the 26 [BIBLE]" .)