Noun
1. 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
2. an indication of radiant light drawn around the head of a saint
3. a distinctive but intangible quality surrounding a person or thing;
"an air of mystery""the house had a neglected air""an atmosphere of defeat pervaded the candidate's headquarters""the place had an aura of romance"