- 笛 — flute / whistle
- 警笛 — alarm whistle, horn
- 汽笛 — steam whistle
- 口笛 — whistle (with mouth)
- 号笛 — signal whistle
- 吹笛 — blowing flute (formal expression)
The kanji 笛 combines the bamboo radical 竹 with the phonetic element 由 (ユ・テキ) to express a flute or whistle made from bamboo. These instruments have been used in Japan since ancient times for music, rituals, and signaling.
彼は 笛の音で犬を呼びました。
He called the dog with the sound of a whistle.
警笛が鳴って、車が止まりました。
The horn sounded, and the car stopped.
🎧 Listen to テキ and ふえ