come in

What it means

To enter a place, especially a room or building. It's also used for trains, buses, and ships arriving, for tides rising, and for news or information arriving from somewhere.

Examples

• Come in and shut the door behind you, please.
• The next train comes in at platform three.
• Reports are coming in about a fire downtown.
• What time does the tide come in today?

Where it comes from

Inseparable. The phrase 'come in!' is the standard polite response when someone knocks at a door. The choice between 'come in' and 'go in' depends on the speaker's location: use 'come in' if you're inside, 'go in' if you're outside.

Related phrasal verbs