(net-bī´ōs) (n.) Short for Network Basic Input Output System, an API that augments the DOSBIOS by adding special functions for local-area networks (LANs). Almost all Windows-based LANs for PCs are based on the NetBIOS. Some LAN manufacturers have even extended it, adding additional network capabilities.
NetBIOS Specification This specifications document provides information on network control block, commands and example programs.