gumchewing adjective 1noun 1 adjective1 •Chewing gum.The spectacle of a bunch of crewcutted, gumchewing teenagers lording it over the natives in the streets of Saigon is a lesson in how not to conduct foreign relations. — 1965 noun1 •The chewing of gum.Hunk gave him a fleeting glance and went back to his gumchewing. — 1947
