hex n. 1. Short for {{hexadecimal}}, base 16. 2. A 6-pack
of anything (compare {quad}, sense 2). Neither usage has
anything to do with {magic} or {black art}, though the pun is
appreciated and occasionally used by hackers. True story: As a
joke, some hackers once offered some surplus ICs for sale to be
worn as protective amulets against hostile magic. The chips were,
of course, hex inverters.