Hangover/ˈhæŋəʊvər/ Definition 1 of 2Pro Tip 1/3Physical Discomfort Hangover typically describes physical symptoms after drinking too much alcohol. She skipped breakfast because her hangover made her stomach turn. Pro Tip 2/3Context Sensitive Use 'hangover' in casual conversations, not formal situations. Sorry for canceling our morning jog; I've got a serious hangover. Pro Tip 3/3Figurative Use Metaphorically, 'hangover' can describe lingering effects of past actions. He has a financial hangover from his wild spending last month.