Cause grieving blokes get in their hearts (5)

I believe the answer is:

evoke

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'cause grieving blokes' is the definition.
'evoke' can be an answer for 'cause' (evoking is a kind of causing). I am not certain of the 'grieving blokes' bit.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for evoke that I've seen before include "Call back (memories)" , "Awake memories" , "Bring (a thing) to mind" , "Call forth (a response)" , "Summon up" .)

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