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1.
(Jamaican slang) (noun) A con man or trickster. (verb) to trick someone, usually out of money.

(noun) The man is a ginnal! He's selling cooking oil as home remedies!

(verb) Anyone who can ginnal a Jamaican must be very tricky!
by Sam Blob March 06, 2008
 
2.
(Jamaican slang) (noun) A con man or trickster. (verb) to trick someone, usually out of money.
(noun) The man is a ginnal! He's selling cooking oil as home remedies!

(verb) Anyone who can ginnal a Jamaican must be very tricky!
by Sam Blob March 05, 2008
 
3.
Describes a person, usually on the internet, who displays a bitter attitude and personality towards others only because that individual cannot cope with the harsh dealings of reality; see also simp, wanksta.
Why she gotta act like such a ginnal? It's ridiculous

He can be such ginnal person at times as well.
by Juse Hedd April 02, 2005