/ˈdiː.lɚ/
a person who sells illegal drugs
the person who gives out the cards in a card game （纸牌游戏的）发牌者
a person whose business is buying and selling a particular product 交易商；贸易商
an art/antique dealer
艺术品经销商；古董商
~ in sth
He’s a dealer in second-hand cars.
他经销二手汽车。