1. wassailer(n = noun.person) carouser - someone who enjoys riotous drinking;
is a kind of drinker, imbiber, juicer, toper
Derived form verb wassail1
2. wassailer(n = noun.person) toaster - someone who proposes a toast; someone who drinks to the health of success of someone or some venture;
is a kind of admirer, booster, champion, friend, protagonist, supporter
Derived form verb wassail2
One who drinks wassail; one who engages in festivity, especially in drinking; a reveler. [1913 Webster]
"The rudeness and swilled insolence
Of such late wassailers." [1913 Webster]