sum ‧ mit /ˈsʌmət, ˈsʌmɪt/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: Old French ; Origin: somete , from sum 'top' , from Latin summum , from summus ; ⇨ ↑ sum 1 ]
1 . an important meeting or set of meetings between the leaders of several governments:
the European summit
The two presidents agreed to hold a summit in the spring.
a five-nation summit meeting
2 . the top of a mountain ⇨ peak
summit of
Many people have now reached the summit of Mount Everest.
3 . the summit of something formal the greatest amount or highest level of something SYN peak :
His election as President represented the summit of his career.