Britannica Dictionary definition of JAZZ
[noncount]
1
:
a type of American music with lively rhythms and melodies that are often made up by musicians as they play
—
often used before another noun
2
informal
a
:
meaningless or foolish talk
b
:
similar things
:
stuff
2
jazz
/ˈʤæz/
verb
jazzes;
jazzed;
jazzing
jazzes;
jazzed;
jazzing
Britannica Dictionary definition of JAZZ
jazz up
[phrasal verb]
jazz up (something)
or
jazz (something) up
informal
:
to make (something) more interesting, exciting, or attractive