Pronunciation: [ nohl ]
Definition: noun
a small, rounded hill or eminence; hillock

Origin: Old English; Germanic
Etymology: cnoll ‘hilltop’, of Germanic origin; related to German Knolle ‘clod, lump, tuber’ and Dutch knol ‘tuber, turnip’
Usage:

Synonyms:
bluff
hill
hilltop
Antonyms:
decline
depression
Example:
They decided to have a picnic on the knoll with a beautiful view of the meadow.