summit

Peak denotes:

Mountain peak , the highest point of a mountain (also of a mountain range)
Climbing peaks , rocks approved for climbing in various German low mountain ranges
Summit , a conference of political leaders
colloquially a maximum, see extreme value
Swiss German a croissant
occasionally the top of a tree, the top
Summit (large location) an area in the Moselle wine-growing region

See also:

Wiktionary: summit - explanations of meanings, word origins, synonyms, translations