1. Plural of gummer; people or things that gum or stick.
Usage: informal; chiefly British
2. Toothless people, especially elderly individuals (dated slang).
Usage: slang; dated; offensive

Examples

• The factory workers were gummers, applying adhesive to the cardboard sheets.
• Old gummers sat on the park bench sharing stories.
• The machine's gummers kept jamming with dried paste.