mos

noun
  1. An abbreviation for 'months', often used in informal contexts to denote a period of time. noun
    The project is expected to be completed in 6 mos.
    She has been working here for 18 mos.
  2. A slang term for 'moustache', often used in informal or humorous contexts. noun
    He's growing a mos for Movember.
    That mos makes him look like an old-timey detective.