hangover
🇺🇸
/ˈhæŋəʊvər/
🇬🇧
/ˈhæŋəʊvə(r)/
a bad feeling you get the day after you drink too much alcohol, like a headache or feeling sick
After the party, he had a bad hangover and stayed in bed all day.
something from the past that still exists but may not be needed or useful anymore
The old traditions are considered hangovers from the ancient times.