Merriam-Webster's Collegiate® Dictionary, 11th Edition
HEX
I. verb
Etymology: Pennsylvania German hexe, from German hexen, from Hexe witch, from Old High German hagzissa; akin to Middle English hagge hag
Date: 1830
intransitive verb to practice witchcraft, transitive verb to put a hex on, to affect as if by an evil spell ; jinx , hexer noun
II. noun
Date: 1856
a person who practices witchcraft ; witch , spell , jinx ,
III. adjective
Date: 1924
hexagonal ,
IV. adjective or noun
Date: 1970
hexadecimal ,
V. abbreviation hexagon