Answer:
Grendel's scream is described in the given line.
Explanation:
The given line is taken from the epic 'Beowulf.' The poem is one of the Old English surviving literary work.
In the given instance, Beowulf was called by the King of the Danes, Hrothgar, to slay the giant, Grendel, who has been troubling people in his mead hall, Herot.
When Beowulf slains Grendel, his screams in pain and agony has been described as 'Screams of the almighty enemy.' In given line, the poet is describing Grendel, as screams of almighty because he was the monster who was powerful. It was almighty enemy's scream, Grendel, that sang in the darkness, when he tried to kill Beowulf in darkness, but Beowulf attacked him throughh his giant claws.