dab hand
US /ˌdæb ˈhænd/
UK /ˌdæb ˈhænd/

1.
솜씨 좋은 사람, 능숙한 사람, 전문가
a person who is very skilled at a particular activity or craft
:
•
My grandmother is a real dab hand at baking cakes.
우리 할머니는 케이크 굽는 데 정말 솜씨가 좋아.
•
He's a dab hand with a paintbrush.
그는 붓 다루는 데 능숙해.