›[I]if two people, companies, systems, etc. interface, they are in contact and work together with each other: interface with sb/sthAll workers at the airport should be willing to interface with local law-enforcement personnel as and when necessary.
›[I or T]ITif a computer, mobile phone, etc. interfaces with another system or piece of equipment, or is interfaced with it, it can be connected to or used with it: interface (sth) with sthWireless Application Protocols are standards that govern how mobile phones interface with the World Wide Web.