All 4 Uses

visceral
in
The Lords of Discipline
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As lovely a woman as I have ever seen, bred and nurtured like a gardenia, she has always seemed somehow odorless and sexless to me, yet viscerally seductive in the manner of Southern women, that taloned species who speak with restrained and self-effacing drawls, fill a room with elegance and vulnerability, move with the grace of wind-tilted cane, and rule their families with a secret pact of steel.†
Chpt Prol.
During speeches to the Corps, the indisputable power of his own rhetoric would affect him so viscerally that he would dance along a thin, precarious edge of control in constant danger of plunging headlong into much darker and more radical passions.†
Chpt 1.5 *
And I was beginning to understand in a visceral inchoate way that every single thing I had been taught or had learned on my own since I was a child contained the elements of a lie.†
Chpt 1.10
Nothing has ever affected me in that same profoundly visceral way as the salutation of the Corps when I broke free from the steamy enclave of the locker room into the blue-hazed, cavernous, light-filtered center of the Armory.†
Chpt 3.30

Definitions:

(1) (visceral as in: a visceral reaction)
something felt strongly; or describing something as arising from instinct rather than reason (like saying "felt in the gut")
(2) (visceral as in: visceral muscles)
relating to or affecting the viscera (internal organs)
(3) (meaning too rare to warrant focus)