The Jargon File (version 4.4.7, 29 Dec 2003):

dickless workstation
 n.

    Extremely pejorative hackerism for ?diskless workstation?, a class of
    botches including the Sun 3/50 and other machines designed exclusively to
    network with an expensive central disk server. These combine all the
    disadvantages of timesharing with all the disadvantages of distributed
    personal computers; typically, they cannot even boot themselves without
    help (in the form of some kind of breath-of-life packet) from the server.


The Free On-line Dictionary of Computing (30 December 2018):

dickless workstation

    Extremely pejorative hackerism for "diskless
   workstation".

   [Jargon File]

   (1995-03-28)