to make a loud, restless sound: to roar, growl, moan, or be in an uproar
At its core this word names one thing: a loud, unquiet, sustained sound. It does not fix a pitch or a source so much as a quality, the churning, restless noise of something that will not settle. The same word can carry the crash of the sea, the growl of a dog, the din of a crowd, or the low moan of a grieving person, because in Hebrew all of these are heard as the same kind of commotion.
The senses fan out from that single picture. In nature it is the roar of pounding waves. Among people it becomes the uproar of nations at war, of a city in turmoil, or of someone loud and unruly with drink. Turned inward, it describes the heart, the stomach, or the spirit churning with grief, longing, or dread, so that the psalmist can ask his own soul why it is in such a commotion.
That inward use is the word's most striking move. Hebrew locates deep feeling in the body's insides, so to say the stomach or heart roars is to say a person is shaken to the core. The noise is real to the sufferer even when no one else can hear it.