Meaning of ARCANE in English
/ahr kayn"/ , adj.
known or understood by very few; mysterious; secret; obscure; esoteric: She knew a lot about Sanskrit grammar and other arcane matters.
[ 1540-50; ( arcanus, equiv. to arc ( ere ) to shut up, keep (deriv. of arca a chest, box) + -anus -AN ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012