cut in

verb

1. 1

   mix in with cutting motions

2. 2

   interrupt a dancing couple in order to take one of them as one's own partner

   Jim always cuts in!

3. 3

   break into a conversation

   her husband always chimes in, even when he is not involved in the conversation

4. 4

   drive in front of another vehicle leaving too little space for that vehicle to maneuver comfortably

5. 5

   allow someone to have a share or profit