basement, cellar (floor below ground level)

safekeeping, storage / custody

barrel

barrel

keep, maintain, store / have custody, have charge

underground; subterranean

(history) a common courtier (a courtier who didn't get access to the imperial palace)

(chiefly women's speech) first person singular pronoun: I, me

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness