1. [mid-19C+] a bout of riotous drinking, often lasting several days and including random acts of excess, violence etc; thus on a bender
2. [late 19C] (US) a rampage.
3. [late 19C–1910s] anything exceptional, astounding.
1. [mid-19C+] on a drinking spree.
2. [20C+] on any other kind of spree.
3. [1930s+] bingeing on drugs.