Definition of ultras:
(N) :
a type of association football fans who are known for their fanatical support.
(N) :
fanatical association football fans.
(N) :
a 2020 Italian drama written and directed by Francesco Lettieri and starring Aniello Arena, Ciro Nacca and Simone Borrelli.
(N) :
a type of ice hockey fans mainly in European ice hockey culture who are known for their fanatical support of a club.