What does the word wassailing mean in song we come

The word 'wassailing' in the song 'We come' refers to the ancient Christmas tradition of going from door to door, singing carols, and offering a toast to the household. It is believed that the term originated from the Anglo-Saxon phrase 'waes hael,' which means 'be in good health' or 'good health to you.' Wassailing was originally a way for communities to come together, share in the festive spirit, and exchange greetings during the holiday season.