尖 (jiān): แหลม

The pencil has just been sharpened, and its tip is very pointed; if you're not careful, it can prick your hand.

There is a pointed tower on the mountain top, visible from a very far distance.

Her speaking voice is very sharp; it sounds like she's angry.

The point of the thumbtack is very sharp; be careful when pressing it.

He stood at the very front of the line and was the first to cross the finish line.