The Chinese word for guitar is
吉他

jí tā

Chinese Definition

guitar
1. 吉他
Components
吉
1. auspicious; lucky
Antonyms: 凶
吉利 - auspicious; lucky
2. good
3. (Cantonese, euphemistic) empty
Synonyms: 空
橫掂有間房fong4-2 吉咗喺度，不如租畀人住啊。 - Since there's an empty room, why don't we rent it out?
交吉卷 - Hand out an unanswered (empty) exam paper
4. (Cantonese, euphemistic) emptiness; nothingness
勞碌一生得個吉 - A lifetime of laborious hardworking amounts to nothing
5. Short for 吉林, Jilin Province
6. (Taiwan, internet slang) to accuse; to sue; to file a lawsuit; to press charges
這我一定吉 - I will definitely sue for this
7. (place, zh, t=Ji County, county, prefecture-level city/Linfen, province/Shanxi, c/China)
他
1. (chiefly Mandarin Jin Xiang dialectal Wu originally gender-neutral; nowadays usually referring to males) he; him; she; her
他去了。 - He went away.
我認識shi 他。 - I know him.
2. A dummy pronoun. Compare another pronoun, (m, zh, 之), that is also a topicalizer
睡他個昏天黑地
(Alternative form 它)
3. other; another
別無他求 - have no other request (formal)
4. usage. (sense, personal pronoun)
5. usage. * Originally gender-neutral before the 1910s, when the character she; her was coined; now usually refers to males (also occasionally refers to females).
6. usage. ** However, 他/她/牠/它/祂 is only a written distinction; they are all still pronounced as tā.
7. usage. * This term can refer to a person of unknown gender or there is no need to mention gender of the person referred to, while they (singular).