Definition of pinnacling:
(n) :
The highest point.
(n) :
(figuratively) An all-time high; a point of greatest achievement or success.
(n) :
(geology) A tall, sharp and craggy rock or mountain.
(n) :
(architecture) 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.
(v) :
(transitive) To place on a pinnacle.
(v) :
(transitive) To build or furnish with a pinnacle or pinnacles.