All 4 Uses

aura
in
A Prayer for Owen Meany
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But the only aura of the granite quarry that clung to Owen was the granular dust, the gray powder that sprang off his clothes whenever we lifted him up.†
p. 4.8
The bleak brick and stone, the ivy frosted with snow, the dormitories and classroom buildings with their windows all closed—with a penitentiary sameness— gave the campus the aura of a prison enduring a hunger strike; and without the students hurrying on the quadrangle paths, the bare, bone-colored birches stood out in black-and-white against the snow, like charcoal drawings of themselves, or skeletons of the alumni.†
p. 150.7
An aura of stale arguments almost visibly clings to the hasty clothing of the children.†
p. 177.8
At last, I was free to venture backstage, where I had grown used to the aura of spiritual calm surrounding Owen Meany at the makeup mirror.†
p. 239.6 *

Definitions:

(1) (aura)
A distinctive quality, mood, or feeling that seems to surround a person, place, or thing; or, more literally, a glowing light shown around someone's head or body in spiritual or artistic images
(2) (meaning too rare to warrant focus)
In medicine, an "aura" can reference a sensation (as of a cold breeze or bright light) that precedes the onset of certain disorders such as a migraine attack or epileptic seizure.