He put a calloused hand to his face and let out a deep sigh.
He could feel the thick calloused skin on her heels and on the balls of her feet.
He stood looking down at the dark, callused palms of his hands.
For example, in this environment humans will have heavily calloused feet.
Talbott is not claiming that supremely worthwhile happiness must be of a sort that is calloused against any sort of revelation, even a tragic one.
I looked at his hands—they were not the hands of a gentleman farmer; they were thick and calloused.