Etymology tree
Proto-Indo-European *ǵʰh₂éns
Proto-Germanic *gans
Old English gōs
Middle English gos
English goose
Proto-Indo-European *swenh₂-der.
Proto-Indo-European *swónh₂-osder.
Proto-Germanic *swanaz
Proto-West Germanic *swan
Old English swan
Middle English swan
English swan
blend
English gwan
Blend of goose + swan.
Meanings
(neologism, rare) A hybrid between a goose and a swan, especially the offspring of a gander (male goose) and a pen (female swan).