bender
n. countable B2 Upper Intermediate US //ˈbɛndɝ// UK //bˈɛndɐ// ben·der
n. a period of heavy drinking that lasts for several days. You use this word when someone drinks too much alcohol over a long weekend or a few days in a row.
n. a prolonged period of heavy drinking, typically lasting several days. Informal register; often used with the preposition 'on' (e.g., 'on a bender').
He went on a bender last weekend.
After the stressful project ended, Mark went on a three-day bender to celebrate.
The journalist's erratic behavior during the tour was largely attributed to a severe bender that left him exhausted and unreliable for interviews.