|Noah Webster's Dictionary|
1. (v. i.) To eject or throw up from the stomach with violence; to eruct.
2. (v. i.) To eject violently from within; to cast forth; to emit; to give vent to; to vent.
3. (v. i.) To eject wind from the stomach through the mouth; to eructate.
4. (v. i.) To issue with spasmodic force or noise.
5. (n.) The act of belching; also, that which is belched; an eructation.
6. (n.) Malt liquor; -- vulgarly so called as causing eructation.
Int. Standard Bible Encyclopedia
belsh: The primary idea of this word is "to gush forth" as a fountain. As used in Psalm 59:7 the thought is that these enemies had so cherished these evil thoughts and bitter wrath that now the heart is a very fountain of evil, and has taught the tongue how to give utterance thereto. But the previous verse shows that the Psalmist also had in mind the howling and barking of the dogs about the city. The imprecations of his enemies are like the snarling, howling, barking of dogs which in an eastern city makes the night hideous with the noise, and is continued until the daybreak.
Jacob W. Kapp
Belch (1 Occurrence)
Psalms 59:7 Behold, they belch out with their mouth: swords are in their lips: for who, say they, doth hear? (KJV JPS ASV DBY WBS YLT NAS)