gumshoe /ˈɡʌm.ʃuː/noun 2verb 1forms 3 noun2 •A sneaker or rubber overshoe. •(slang) A detective."Who's this gumshoe guy from the bush league tailin' us?" — 1920 verb1 •(slang) To act as a detective.But these days, more and more women are gumshoeing through the pages of murder mysteries. — 1988 formsgumshoed · gumshoeing · gumshoes