Bank on poker player's trick (5)
I believe the answer is:
bluff
This might be a double definition.
'bank on poker player's' is the first definition.
'bluff' can be an answer for 'bank' (bluff is a kind of bank). I'm not sure about the 'on poker player's' bit.
'trick' is the second definition.
(thesaurus)
Can you help me to learn more?
(Other definitions for bluff that I've seen before include "Pretend - headland" , "What a poker player does - or tries to" , "Steep promontory" , "Act deceptively; steep cliff" , "Feign" .)