Adjective long time has 1 sense
  1. longtime - of long duration; "a longtime friend"
    Antonym: new (indirect, via old)
,Noun long time has 1 sense
  1. long time, age, years - a prolonged period of time; "we've known each other for ages"; "I haven't been there for years and years"
    --1 is a kind of time period, period of time, period
    --1 has particulars:
     long; month of Sundays; eon, aeon; blue moon; year dot
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