1. a large grey wild goose that is the ancestor of most domestic geese

Examples

• The greylag is native to Europe and Asia.
• Flocks of greylags migrate south for the winter.
• We spotted a greylag feeding in the marsh.
• The greylag goose has distinctive orange legs and bill.
• Domestic geese were bred from the wild greylag.
• A pair of greylags nested near the pond.