White Mass Seen Around a Mountain's Peak

This page is the CodyCross answer for the clue below from New York, New York!, Group 371, Puzzle 4 (Montauk Point).

Question is: White Mass Seen Around a Mountain's Peak

and the answer is: CAPCLOUD

Word Meaning:

CAP CLOUD — (meteorology) An accessory cloud in the form of a cap which occurs above, or attached to, cumulus, cumulonimbus, and sometimes stratocumulus clouds.

Definitions from Wiktionary.