Oxford Dictionary English dab hand noun noun BrE BrE//ˌdæb ˈhænd// ; NAmE NAmE//ˌdæb ˈhænd// (British English, informal) Add to my wordlistjump to other resultsa person who is very good at doing something or using something He's a dab hand at cooking spaghetti. She's a dab hand with a paintbrush. Word Originearly 19th cent.: of unknown origin.Check pronunciation: dab hand oxfordlearnersdictionaries.com