Peak, Top, Crown
The kanji means summit and this word means summit, peak, top and crown, most often in reference to mountains.
Since this word is made up of a single kanji, it probably uses the kun'yomi reading. You should already know this reading from when you learned 頂く. If you can remember that, you can remember this too!
Early Sunday morning, Akira set off for the summit of Mt. Fuji.
The pink cat clan lives deep in the mountains and on mountain tops.
When I woke up, I saw a rugged peak in front of me, and a hermit standing on top of it.