BYO
verb
- to bring your own drink to a setting where food is provided
- bring your own
Wiktionary
noun
- Obsolete spelling of bayou.
phrase
- Initialism of bring your own.
“After I check into my single room—a rustic BYO-bed-sheets situation—I return to the common area and settle in for the afternoon’s presentations.”
- Initialism of buy your own.