/ dʒɪŋks; NAmE / noun
[ sing. ] jinx (on sb/sth) bad luck; sb/sth that is thought to bring bad luck in a mysterious way :
I'm convinced there's a jinx on this car.
► jinx verb [ vn ]
••
WORD ORIGIN
early 20th cent. (originally US): probably a variant of jynx wryneck (because the bird was used in witchcraft).