be a dab hand(redirected from am a dab hand)
be a dab hand
To be skilled in a particular area. Primarily heard in UK, Australia. Amanda can fix that hole in your blouse—she's a dab hand at sewing.
be a dab hand(British & Australian)
to be very good at an activity (often + at ) You should get Ann to have a look at that. She's a dab hand at getting stains out of clothes. (often + with ) I hear you're a dab hand with the paintbrush. (= you are good at painting)