Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
Jamaican [dʒəˈmeɪkən] adj яма́йский#
n жи́тель(ница) m(f) Яма́йки
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: