This word really is Spanish slang that means lowlife. Also, can mean person with low social status and moral character.
He acts like a nacco.
ayon kay yazminev ika-06 ng Nobyembre, 2006
1 more definition
Chicano term which means dumb or stupid
Oye nacco, that don't go there
ayon kay leonardo mireles ika-14 ng Nobyembre, 2003