名詞 guitar:

1. a stringed instrument usually having six strings; played by strumming or plucking

1. Doubtless he'll be bringing his guitar, as usual.
   他很可能跟平常一樣會(huì)帶吉他來(lái)。
2. His parents balked at the cost of the guitar he wanted.
   他想要那個(gè)吉他，但他父母看到吉他的價(jià)格卻躊躇不決。
3. He plays the guitar and sings too.
   他會(huì)彈吉他，也會(huì)唱歌。
4. I write my own songs and I play the guitar as well.
   我唱自己譜曲的歌，也彈吉他。
5. Tom is going to buy either a guitar or a piano.
   湯母不是要買(mǎi)一把吉他就是要買(mǎi)一架鋼琴。
6. It is fun to play the guitar.
   彈吉他是好玩的。
7. He sat there strumming a guitar.
   他坐在那兒漫不經(jīng)心地彈吉他。
8. I like to play guitar.
   我喜歡彈吉他。

gui.tar

n.Music （名詞）【音樂(lè)】
An instrument having a large, flat-backed sound box similar in shape to a violin, a long fretted neck, and usually six strings, played by strumming or plucking.
吉他：一種具有大而平的音箱的樂(lè)器，形狀與小提琴相似，琴頸長(zhǎng)，通常有六根弦，為彈撥樂(lè)器

來(lái)源：
French guitare
法語(yǔ) guitare
from Spanish guitarra
源自 西班牙語(yǔ) guitarra
from alteration of Greek kithara [cithara]
源自 希臘語(yǔ) kithara的變化 [西塔拉琴]

【引伸】
guitar.ist
n.（名詞）