Definition of past adjective from the Oxford Advanced American Dictionary

      

    past

     adjective
    adjective
    NAmE//pæst//
     
     
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  1. 1gone by in time in past years/centuries/ages in times past The time for discussion is past.
  2. 2[only before noun] gone by recently; just ended I haven't seen much of her in the past few weeks. The past month has been really busy at work.
  3. 3 [only before noun] belonging to an earlier time past events From past experience I'd say he's probably forgotten the time. past and present students of the college Let's forget about who was more to blame—it's all past history.
  4. 4[only before noun] (grammar) connected with the form of a verb used to express actions in the past
See the Oxford Advanced Learner's Dictionary entry: past