名詞 recorder:

1. equipment for making records
   同義詞：recording equipment, recording machine
2. someone responsible for keeping records
   同義詞：registrar, record-keeper
3. a barrister or solicitor who serves as part-time judge in towns or boroughs
4. a woodwind with a vertical pipe and 8 finger holes and a whistle mouthpiece
   同義詞：fipple flute, fipple pipe, vertical flute

1. The recorder wasn't plugged in.
   錄音機的插頭沒插上。
2. John fixed the tape recorder by himself.
   約翰靠他自己修理錄音機。
3. An assiduous and devoted admirer, student, and recorder of another's words and deeds.
   極度崇拜者崇拜另一人言行的殷勤和忠實的、學(xué)生和記錄者
4. He showed me how to use the tape recorder.
   他教我如何使用這臺卡式錄音機。
5. We needed someone to fix the tape recorder.
   我們需要有人來修理錄音機。
6. He bought a new cassette recorder.
   他買了一臺新的盒式錄音機。

re.cord.er

n.（名詞）
One, such as a tape recorder, that makes recordings or records.
記錄裝置，記錄員：用做記錄或錄制的人或裝置，如錄音機
Law A judge who has criminal jurisdiction in a city.
【法律】 刑事法院法官：某個城市中有刑事審判權(quán)的法官
Music A flute with eight finger holes and a whistlelike mouthpiece.
【音樂】 雷高德：一種笛子，其有八個指孔和一個哨狀吹嘴

來源：
Sense 3, probably from record [to practice a tune, warble]
釋義3，可能源自 record[演奏某曲調(diào)，囀鳴]