arc
Latinchest, box, to enclose, to shut up
Variants
arcarcaarcanarce
About This Root
From Latin arcere (to shut up, enclose) and arca (chest, box), giving arcanus (hidden, secret). Arcane means mysterious or secret — knowledge locked in a box. The same root produced coerce (to restrain, force into enclosure) and coercion. The sense of containment and concealment runs through all derivatives.