Keep striking for money (5)
I believe the answer is:
pound
This clue could be a double definition.
'keep striking' is the first definition.
'pound' can be an answer for 'keep' (thesaurus). I am not certain of the 'striking' bit.
'for money' is the second definition.
(pound sterling)
Can you help me to learn more?
(Other definitions for pound that I've seen before include "16 ounces" , "Hit repeatedly; coin" , "Some ready" , "Powder - 16 oz - 100p" , "UK currency; weight" .)