Εννοια

1. A musical composition with lyrics for voice or voices, performed by singing.
2. Any musical composition.
3. Poetical composition; poetry; verse.
4. The act or art of singing.
5. A melodious sound made by a bird, insect, whale or other animal.
6. The distinctive sound that a male bird utters to attract a mate or to protect his territory; contrasts with call; also, similar vocalisations made by female birds.
7. A low price, especially one under the expected value; chiefly in for a song.
8. An object of derision; a laughing stock.