demmie noun[in the plural]1 •(slang) Demerol, especially when used as a recreational drug.“Whatchu got, man?” / “Reds, bennies, dexies, yellow jackets, demmies.” / “Yeah, demmies're good shit, man. I pay you. Fuck. I got money. I'm hurting inside. Got beat up. Where my money?” — 1998 formsdemmies