Crossword Genius

Cliff's poker tactic (5)

Ross

I believe the answer is:

bluff

I'm a little stuck... Click here to teach me more about this clue!

This clue could be a double definition.

'cliff's' is the first definition.
(thesaurus)

'poker tactic' is the second definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

Can you help me to learn more?

(Other definitions for bluff that I've seen before include "What a poker player does - or tries to" , "Attempt to deceive" , "Act deceptively; steep cliff" , "Hoodwink" , "Deceive by concealing weakness" .)

I've seen this clue in the Sydney Morning Herald.
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