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]

Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "lobotomy":
   amygdalotomy, ankylotomy, arteriotomy, blepharotomy, caesarean,
   cardiotomy, celiotomy, cholecystotomy, cirsotomy, coccygotomy,
   colpotomy, craniotomy, cystotomy, embryotomy, enterotomy,
   gastroenterotomy, gastrotomy, glossotomy, hebotomy, herniotomy,
   hysterotomy, laparotomy, lithotomy, mastotomy, nephrotomy,
   neurotomy, ovariotomy, pancreatotomy, phrenicotomy, pneumonotomy,
   prefrontal lobotomy, prostatotomy, psychosurgery, salpingotomy,
   sclerotomy, thoracotomy, thyrotomy, tonsillotomy, ureterotomy,
   urethrotomy



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.


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

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]