Here an old grandmother was crooning over a sick child, and rocking it to and fro.
Dickens.
Croon, v. t. [imp. & p. p. Crooned (kr&oomac;nd); p. pr. & vb. n. Crooning.] 1. To sing in a low tone, as if to one's self; to hum.
Hearing such stanzas crooned in her praise.
C. BrontÚ.