bomber UK /ˈbɒmə(ɹ)/US /ˈbɑmɚ/noun 6adjective 1forms 3 noun6 •A military aircraft designed to carry and drop bombs. •A person who sets bombs, especially as an act of terrorism. •Ellipsis of bomber jacket.A few years ago, the leather bomber was a gold mine for retailers and a gravy train for vendors. Consumers were crazy for them. — 1991 •(slang) A large cannabis cigarette.In Canada, marihuana cigarettes rarely contain any tobacco, and may vary in size from a few hundred milligrams up to a several gram "bomber." — 2011 •Ellipsis of graffiti bomber. •(US, slang) A 22-ounce beer bottle. adjective1 •(slang) Completely solid and secure, usually referring to some form of protective gear. formsbombers · more bomber · most bomber