WordNet (r) 3.0 (2006):

pom
    n 1: a disparaging term for a British person [syn: pommy,
         pom]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

POM
       Project Object Model (Maven)


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

POM
 /P?O?M/, n.

    Common abbreviation for phase of the moon. Usage: usually in the phrase
    POM-dependent, which means flaky.


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

POM

   phase of the moon

   Usually used in the phrase "POM-dependent", which means
   flaky.

   (1995-04-10)