ju ‧ bi ‧ lee /ˈdʒuːbəliː, ˈdʒuːbɪliː, ˌdʒuːbəˈliː/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: French ; Origin: jubilé , from Late Latin jubilaeus , from Late Greek iobelaios , from Hebrew yobhel 'sheep's horn, jubilee' ; influenced by Latin jubilare ( ⇨ ↑ jubilant ) ]
a date that is celebrated because it is exactly 25 years, 50 years etc after an important event
⇨ ↑ diamond jubilee , ↑ golden jubilee , ↑ silver jubilee