'Wassailer' definitions:

Definition of 'wassailer'

noun

Someone who enjoys riotous drinking [syn: wassailer, carouser]

noun

Someone who proposes a toast; someone who drinks to the health of success of someone or some venture [syn: toaster, wassailer]

From: GCIDE

Wassailer \Was"sail*er\, n. 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. --Milton. [1913 Webster]