Learn how to say Summit correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word summit:
the highest point or part, esp of a mountain or line of communication; top
the highest possible degree or state; peak or climax ⇒ the summit of ambition
the highest level, importance, or rank ⇒ a meeting at the summit
a meeting of chiefs of governments or other high officials
(as modifier) ⇒ a summit conference