The highest point.
The point, in any trajectory of an object in space, where it is farthest from the Earth.
The point, in an orbit about the Earth, that is farthest from the Earth: the apoapsis of an Earth orbiter.
The point, in an orbit about any planet, that is farthest from the planet: the apoapsis of any satellite.
The highest point.
An upright member, generally ending in a small spire, used to finish a buttress, to constitute a part in a proportion, as where pinnacles flank a gable or spire.
Coordinate term: sea stack
A tall, sharp and craggy rock or mountain.
An all-time high; a point of greatest achievement or success.
To place on a pinnacle.
To build or furnish with a pinnacle or pinnacles.