out ‧ break /ˈaʊtbreɪk/ BrE AmE noun [countable]
[ Word Family: noun : ↑ break , ↑ outbreak , ↑ breakage ; adjective : ↑ breakable ≠ ↑ unbreakable , ↑ broken ≠ ↑ unbroken ; verb : ↑ break ]
if there is an outbreak of fighting or disease in an area, it suddenly starts to happen:
a cholera outbreak
outbreak of
outbreaks of fighting
the outbreak of World War II
⇨ break out at ↑ break 1