- hexagonal: a bolt with a matching washer and hex nut.
- hexadecimal(def 1).
Origin of hex2
- to bewitch; practice witchcraft on: He was accused of hexing his neighbors' cows because they suddenly stopped giving milk.
- spell; charm: With all this rain, somebody must have put a hex on our picnic.
- a witch.
Origin of hex1
- short for hexadecimal
- (as modifier)hex code
- (tr) to bewitch
- an evil spell or symbol of bad luck
- a witch
Word Origin for hex
1830, American English, from Pennsylvania German hexe "to practice witchcraft," from German hexen "to hex," related to Hexe "witch," from Middle High German hecse, hexse, from Old High German hagazussa (see hag). Noun meaning "magic spell" is first recorded 1909; earlier it meant "a witch" (1856).