LEARNit Dictionary
past master
noun
/ˌpɑːst ˈmɑːstə(r)/
UK
/ˌpæst ˈmæstər/
US
1
a person who is very good at something because they have a lot of experience in it
استاد باتجربه, حرفهای, چیرهدست, زبر دست, استاد کار, استاد ماهر
synonym
expert