What it means

1. verb mix in with cutting motions
2. verb interrupt a dancing couple in order to take one of them as one's own partner
   “Jim always cuts in!”
3. verb drive in front of another vehicle leaving too little space for that vehicle to maneuver comfortably
4. verb allow someone to have a share or profit
5. verb break into a conversation
   “her husband always chimes in, even when he is not involved in the conversation”