arcana
/ɑːˈkeɪnə/plural noun
treated as sing. or pl.(sing. arcanum)
1- secrets or mysteries秘密, 奥秘：
all sorts of arcana about medicines and treatments.
关于医药和治疗的各种奥秘。
1.1
- either of the two groups of cards in a tarot pack: the twenty-two trumps (the major arcana) and the fifty-six suit cards (the minor arcana)两堆塔罗牌中的任意一堆：二十二张主牌（大阿卡纳）和五十六张牌（小阿卡纳）。
词源
mid 16th cent.: from Latin， neuter plural of arcanus （see ARCANE）.