The Collaborative International Dictionary of English v.0.48:

lobotomy \lobotomy\ n. (Med., Surgery)
   The surgical interruption of nerve tracts to and from the
   frontal lobe of the brain, by cutting into the brain.

   Syn: prefrontal lobotomy, prefrontal leucotomy.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

lobotomy
    n 1: surgical interruption of nerve tracts to and from the
         frontal lobe of the brain; often results in marked
         cognitive and personality changes [syn: lobotomy,
         leukotomy, leucotomy, prefrontal lobotomy,
         prefrontal leukotomy, prefrontal leucotomy, frontal
         lobotomy]

The Free On-line Dictionary of Computing (19 January 2023):

lobotomy

   1. What a hacker subjected to formal management training is
   said to have undergone.  At IBM and elsewhere this term is
   used by both hackers and low-level management; the latter
   doubtless intend it as a joke.

   2. The act of removing the processor from a microcomputer in
   order to replace or upgrade it.  Some very cheap clone
   systems are sold in "lobotomised" form - everything but the
   brain.

   [Jargon File]


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

lobotomy
 n.

    1. What a hacker subjected to formal management training is said to have
    undergone. At IBM and elsewhere this term is used by both hackers and
    low-level management; the latter doubtless intend it as a joke.

    2. The act of removing the processor from a microcomputer in order to
    replace or upgrade it. Some very cheap clone systems are sold in
    lobotomized form — everything but the brain.