BYO
abbreviation/ˌbiː waɪ ˈəʊ/
/ˌbiː waɪ ˈəʊ/
(also BYOB
/ˌbiː waɪ əʊ ˈbiː/
/ˌbiː waɪ əʊ ˈbiː/
)- (used in invitations to parties, notices in restaurants, etc.) bring your own (bottle/beer)
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BYO