Base, earthy, crude; instinctive as opposed to reasoned or intellectual.
Burton's Welsh and hungry and visceral sense that everything had to be grabbed or it would be lost forever would be reinforced at this critical stage in his life by the fatalistically hedonistic mood which infected so many.
Melvyn Bragg, Rich. The Life of Richard Burton. Amazon
Dressed now in a sharply cut plain grey suit, his thick black hair slicked back from his forehead, he seemed to fill the room with his own visceral energy.
Before studying law I studied biology. I did that for four years. Maybe that's one of the reasons I often think of our electorate in terms of anatomy. There's the head, or the intellect; there's the heart, and that's compassion; there is the gut, and that's the visceral. I believe that our obligation as leaders is to avoid the gut.
Certainly, I would be a keen supporter of the scheme. If nothing else because the bikes left lying around, unlocked, would provide a stupidly enjoyable opportunity for a generally law abiding person like your reporter to experience the visceral thrill of bike theft for himself without endangering any kind of brush with the law.