a racial slur used agaisnt dominicans. you will never see any domicans refer to another as a dumbinican. such as when african americans say "whats good nigga".
yo miguel you aint a dominican. you's a dumb-in-a-can
by ilcapo June 05, 2005
1 more definition
the proper word if you are calling someone dominican
dominicans are just dumbinacan
by ediotor fooll your tight July 10, 2008