close friend, bosom buddy / crony, chum

増幅器: an amplifier

福三: a male given name

(electronics) amplifier

(electronics) amplification

(electronics) amplify

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

Kyūjitai form of 三蔵 (“Tripitaka”)

(Buddhism) the three branches of sutras / (Buddhism) a high-ranking priest or monk who has mastered all of the Tripiṭaka canons

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