- [plural] things that are secret or mysterious秘密事件;神秘事物
- [singular] either of the two groups of cards in a tarot pack, the major arcana and the minor arcana阿卡纳牌(塔罗牌中的两组牌之一,分大阿卡纳和小阿卡纳)
Word Originmid 16th cent.: from Latin, neuter plural of arcanus, from arcere ‘to shut up’, from arca ‘chest’.