Whirling of Air or a Porthole to Spirit Realms?
Puzzle 13 of Ghost Hunting Hard Pack
Question is: Whirling of Air or a Porthole to Spirit Realms?
and the answer is: VORTEX
Word Meaning:
VORTEX — A whirlwind, whirlpool, or similarly moving matter in the form of a spiral or column.
Definitions from Wiktionary.