Magic derived from evil forces, as distinct from good or benign forces; or magic performed with the intention of doing harm.
Occult or secret magic; magic (or, by extension/comparison, technology etc) that is mysterious, not known to or understood by many.
An evil spell or curse.
A spell (now rare but still found in compounds such as hex sign and hexcraft).
A hexagonal space on a game board.
A witch.
a hexagon-shaped item of rock climbing equipment intended to be wedged into a crack or other opening in the rock.
To cast a spell on (specifically an evil spell), to bewitch.