deal in

phrasal verb

dealt in; dealing in; deals in

1

: to buy and sell (something) as a business

He deals in rare books.

2

: to use or be involved in (something)

tales dealing in myth and mystery

We don't deal in rumor or gossip.

3

: to include (someone) in a card game

"Do you want to play cards with us?" "Sure, deal me in."