1 - 
to take a risk that something will happen/ take risky action in the hope of a desired result 
ریسک کردن به امید به دست آوردن نتایج دلخواه و مطلوب
"he was gambling on the success of his satellite TV channel"  
... [مشاهده متن کامل]
You're rather gambling on it being a nice day by holding the party in the garden, aren't you? 
2 -
play games of chance for money; bet 
قمار کردن، شرط بندی کردن
"he gambles on football" 
ریسک کردن به امید به دست آوردن نتایج دلخواه و مطلوب
... [مشاهده متن کامل]
2 -
قمار کردن، شرط بندی کردن