koto: a Japanese zither derived from the Chinese guzheng / (colloquial) guzheng: a Chinese zither where the koto was based on

a guzheng, zheng (Chinese zither)

a surname

(possibly obsolete) a guzheng, zheng (Chinese zither), where the koto was based on

(formal) Female third-person singular pronoun; she, her, girlfriend

(colloquial) a girlfriend (a female partner in a romantic relationship)

play (a stringed or keyboard musical instrument)

to flick and make something spring/jump / (of materials) to reject; to repel (some external substance) / (from the metaphor of beating beads of an abacus) to calculate

(slang) pistol; gun / tiddlywinks

(literary) they (about women or girls)