Howl
'To howl' signifies grief caused by vastation.
In Ezekiel 32:18, this signifies grief on account of their damnation. (Apocalypse Explained 659[4])
In Micah 1:8, this signifies the grief of the angels and of the men of the church. (Apocalypse Explained 695[24])
In Matthew 13:42, this signifies the grief of sensuous men in their opposition to truths. (Apocalypse Revealed 435)
In Revelation 18:9, this signifies people in control in the church mourning from embarrassment at the loss of wealth. (Apocalypse Revealed 467)
(Referencat: Apocalypse Explained 406)