Bible Dictionary
BELCH
To belch means to gush forth. In Psalm 59 it pictures enemies pouring out bitter words and evil thoughts, compared with the snarling and howling of dogs in the night.
Biblical Usage
Psalm 59 compares the enemies’ words with the snarling, barking, and howling of dogs around a city at night. Their bitter imprecations are pictured as a fountain of evil that continues until daybreak.