Would regularly play poker and become overwrought (6-2)
I believe the answer is:
worked-up
'overwrought' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs can sometimes define each other.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for worked-up that I've seen before include "'Over-excited, emotional (6,2)'" , "In a tizzy" , "Excited" .)