if a train pulls in, it arrives at a station
Example: Her eyes teared, and she could feel a blackness hovering over her as she fought to pull in air.
if a vehicle or driver pulls in somewhere, they stop there
Example: I had just come up to the house from Snow Goose, expecting that you had come back with him, when I saw Cartwright's car pull in.
if the police pull someone in, they arrest them
Example: She’s pulling in at least six figures (=£100,000).
same as pull
Example: The programme pulled in 3.6 million viewers.
same as pull down
Example: The train from Paris was just pulling in.