Green’s Dictionary of Slang

(US) a rustic, a peasant.

1968		‘Richard Hooker’ M*A*S*H (2004) 125: I thought I lived with the two biggest rubes in Korea [...] until this jeeter came along.
1969		H. Rap Brown Die Nigger Die! 27: Man, you must don’t know who I am. / I’m sweet peeter jeeter the womb beater.