English definition of “past”
BEFORE NOW [always before noun] › having happened or existed before now: past relationships I know this from past experience.
UNTIL NOW [always before noun] › used to refer to a period of time before and until the present: I've spent the past ten years in and out of jobs. It's been raining for the past three days.
FINISHED [never before noun] › Something that is past has now finished: My student days are past.
past tense › the form of the verb which is used to show what happened in the past