cobswan/ˈkɒbswɒn/cobswan means A large male swan.cobswan is pronounced /ˈkɒbswɒn/.EtymologyFrom cob (“one who is eminent or great”) + swan.nounA large male swan.“I'am not taken / With a Cob-Swan, or a high-mounting Bull / As fooliſh Leda and Europa were.”