close friend, bosom buddy / crony, chum

a pond (small lake or pool) / a pool (small amount of liquid in a surface) / (calligraphy) part of an inkstone where water is stored

pond, lake, moat / object used for storage

a surname

(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

a personal or private matter / selfishness / privacy, secrecy / (women's speech, obsolete) a brother-in-law

personal, private / secret

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