1. < architecture > Any machine (whether notional or actual) whose instruction set is Lisp .
2. A line of workstations made by Symbolics, Inc. from the mid-1970s (having grown out of the MIT AI Lab ) to late 1980s. All system code for Symbolics Lisp Machines was written in Lisp Machine Lisp . Symbolics Lisp Machines were also notable for having had space-cadet keyboards .
[More details and historical background?]
Lisp Machine Museum .
(2003-07-03)