<noun> Medical Term for a "hangover." Drinking one too many alcholic beverages causes one to feel this the next day.
<e.g. as a noun> Accepting one too many drinks for one's goodbye party results in next-day veisalgia.
<e.g. as an adjective> After a night of partying and accepting free drinks, MSN chats with ex-coworkers may result in awkward veisalgic conversation topics the morning after.