Objective of THEY.
The objective case of the pronoun they.
The objective plural of the pronoun of the third person.
To lift the voice in song; to utter musical rhythmical sounds; make a shrill or humming noise; as, a flying arrow sings; celebrate some event in verse or poetry; as, he sang of the deeds of Aeneas; to make pleasant, musical sounds; as, the brook sings merrily. ...