I. jazz 1 /dʒæz/ BrE AmE noun [uncountable]
[ Date: 1900-2000 ; Origin: Perhaps from Bantu jas 'to cause to dance, excite' ]
1 . a type of music that has a strong beat and parts for performers to play alone:
a jazz band
a jazz club
modern jazz
2 . and all that jazz spoken and things like that:
I’m fed up with work, meetings, and all that jazz.
II. jazz 2 BrE AmE verb
jazz something ↔ up phrasal verb
informal to make something more attractive or exciting:
Jazz up your everyday meals with our new range of seasonings.