trill

1. V-I If a bird trills, it sings with short, high-pitched, repeated notes. (鳥)唧啾

At one point a bird trilled in the conservatory. 在某一刻，一衹鳥兒在溫室裡唧啾啼叫。

2. V-T If someone trills a sound such as the letter "r," they make the sound by tapping the end of their tongue against the inside of their mouth rapidly and repeatedly. 發出抖動的聲音(如字母"r"的音)[技術]

He also trilled his r's. 他發“r”音時，聲音也抖動了一下。

3. N-COUNT A trill is the playing of two musical notes repeatedly and quickly one after the other. 顫音[技術]

4. N the production of a similar effect using the uvula against the back of the tongue 發顫音

5. N the articulation of an (r) sound produced by holding the tip of the tongue close to the alveolar ridge, allowing the tongue to make a succession of taps against the ridge[phonetics]

6. N a melodic ornament consisting of a rapid alternation between a principal note and the note a whole tone or semitone above it 顫音 (Usual symbol , )[music]

7. N a shrill warbling sound, esp as made by some birds (尤指一些鳥發出的)囀聲