deal ‧ er W3 /ˈdiːlə $ -ər/ BrE AmE noun [countable]
[ Word Family: noun : ↑ deal , ↑ dealer , dealings; verb : ↑ deal ]
1 . someone who buys and sells a particular product, especially an expensive one
car/antique/art etc dealer
dealer in
a dealer in modern art
2 . someone who sells illegal drugs
3 . someone who gives out playing cards in a game