1. a server for an online multiuser virtual world Lambdamoo is a server for a virtual world, a computer program which users can log into and explore. Each user takes control of a computerized persona/avatar/incarnation/character. You can walk around, chat with other people, solve puzzles, and even create your very own rooms, descriptions and items. Advanced users can program Lambdamoo, via its built in object-oriented programming language. Lambdamoo only provides the bare framework for your virtual world. A lambdamoo guru could theoretically start with lambdamoo and the included minimal core database and work their way up to a full-fledged system. The rest of us will want to install the lambdacore or jhcore packages which add objects and functionality to lambdamoo. From Debian 3.0r0 APT