NetBIOS over TCP/IP - Computer Definition
Support for the NetBIOS protocol in Windows when running in a TCP/IP network. NetBIOS over TCP/IP (NBT) supports legacy applications that use the NetBIOS protocol as well as the NetBIOS name server (NBNS), which converts NetBIOS names into IP addresses. NetBIOS names are the names (up to 15-characters long) that users assign to their computers in a DOS/Windows network. See NetBIOS and TCP/IP.