From The Collaborative International Dictionary of English v.0.48:
Sing \Sing\ (s[i^]ng), v. t. 1. To utter with musical inflections or modulations of voice. [1913 Webster]
And they sing the song of Moses, the servant of God, and the song of the Lamb. --Rev. xv. 3. [1913 Webster]
And in the darkness sing your carol of high praise. --Keble. [1913 Webster]
2. To celebrate in song; to give praises to in verse; to relate or rehearse in numbers, verse, or poetry. --Milton. [1913 Webster]
Arms and the man I sing. --Dryden. [1913 Webster]
The last, the happiest British king, Whom thou shalt paint or I shall sing. --Addison. [1913 Webster]
3. To influence by singing; to lull by singing; as, to sing a child to sleep. [1913 Webster]
4. To accompany, or attend on, with singing. [1913 Webster]
I heard them singing home the bride. --Longfellow. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Sing \Sing\ (s[i^]ng), v. i. [imp. Sungor Sang; p. p. Sung; p. pr. & vb. n. Singing.] [AS. singan; akin to D. zingen, OS. & OHG. singan, G. singen, Icel. syngja, Sw. sjunga, Dan. synge, Goth. siggwan, and perhaps to E. say, v.t., or cf. Gr. ??? voice. Cf. Singe, Song.] 1. To utter sounds with musical inflections or melodious modulations of voice, as fancy may dictate, or according to the notes of a song or tune, or of a given part (as alto, tenor, etc.) in a chorus or concerted piece. [1913 Webster]
The noise of them that sing do I hear. --Ex. xxxii. 18. [1913 Webster]
2. To utter sweet melodious sounds, as birds do. [1913 Webster]
On every bough the briddes heard I sing. --Chaucer. [1913 Webster]
Singing birds, in silver cages hung. --Dryden. [1913 Webster]
3. To make a small, shrill sound; as, the air sings in passing through a crevice. [1913 Webster]
O'er his head the flying spear Sang innocent, and spent its force in air. --Pope. [1913 Webster]
4. To tell or relate something in numbers or verse; to celebrate something in poetry. --Milton. [1913 Webster]
Bid her . . . sing Of human hope by cross event destroyed. --Prior. [1913 Webster]
5. To cry out; to complain. [Obs.] [1913 Webster]
They should sing if thet they were bent. --Chaucer. [1913 Webster]