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.
Religious or supernatural phenomena one holds to be nonsense or mere trickery; superstitious mumbo-jumbo.
Some action carried out to bring about change as if by magic; a trick; sleight of hand, trickery.
Some ineffectual action or speech, especially if intended to divert attention; nonsense.
A phrase used (by a stage magician, etc.) as a magical incantation to bring about some change: abracadabra, hey presto.