by·gone /ˈbaɪˌgɔn ||ˌgɑn/
  過去的事,往事(a.)過去的
  By·gone a. Past; gone by. “Bygone fooleries.”
  By·gone n. Something gone by or past; a past event. “Let old bygones be”
  Let bygones be bygones, let the past be forgotten.
  ◄ ►
  bygone
       adj : well in the past; former; "bygone days"; "dreams of foregone
             times"; "sweet memories of gone summers"; "relics of a
             departed era" [syn: bypast, departed, foregone, gone]
       n : past events to be put aside; "let bygones be bygones" [syn:
           water under the bridge]