Caern

caern, n., WOD-ism 1. in general usage, alternate spelling of cairn, a pile of stones or simple stone structure built as a memorial, landmark, or grave; from Middle English carne, Old Irish carn. 
2. in Werewolf: The Apocalypse, a Garou holy place or center of spiritual power. [GJ1]
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Addendum: Many Werewolf players mistakenly pronounce this word with two syllables, like "Karen." It has one syllable, and rhymes with "care." Just add an "n" to the end. [GJ1]