ancient times, antiquity, remote ages

to keep one's own bottle of liquor or other alcoholic beverage at a bar

the practice of buying a full bottle of liquor or other alcoholic beverage at a bar and having the bartender keep the unfinished bottle until the purchaser's next visit

Alternative spelling of ボトルキープ

(colloquial) current boyfriend

everything

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

research & development; R&D

classical antiquity