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The Collaborative International Dictionary
Pinnacling

Pinnacle \Pin"na*cle\, v. t. [imp. & p. p. Pinnacled; p. pr. & vb. n. Pinnacling.] To build or furnish with a pinnacle or pinnacles.
--T. Warton.

Wiktionary
pinnacling

vb. (present participle of pinnacle English)