Entry 1 sense Webster, 1913 Gummy /gŭmʹi/ · Gum·my · IPA /ˈɡʌmi/ 01 a. Consisting of gum; viscous; adhesive; producing or containing gum; covered with gum or a substance resembling gum. 1. Consisting of gum; viscous; adhesive; producing or containing gum; covered with gum or a substance resembling gum. “Kindles the gummy bark of fir or pine.” — Milton. “Then rubs his gummy eyes.” — Dryden. Phrases & compounds Gummy tumor — a gumma.