bumfreezer ‎(plural bumfreezers)

  1. (slang) an Eton jacket or other similar short jacket.
    • 2012, Anne de Courcy, Snowdon: The Biography
      Smaller boys wore short Eton jackets, known as bumfreezers
    • 1965, Peter Black, The Poms in the Sun
      Seated at table, eating delicious food brought by European migrant waiters in red bumfreezers, I felt that we were all making a very game pretence of reconstructing Europe.