(finance) Australian dollar / (psychiatry) Initialism of alcohol use disorder.

of a woman, an aunt of one's niece or nephew who is not one's sister; a co-sister-in-law as common aunt to the children of two women's married siblings.

(colloquial, vulgar, humorous) It is fruitless to speculate about counterfactual situations.

(UK) An expression of surprise or alarm.

A half sister of one's parent. / A half sister-in-law to one's parent.

Alternative form of audiobook

(Britain, Ireland) An exclamation of astonishment, confusion, despair, etc.: my sainted aunt, my sainted uncle.

A frequency or range of frequencies of sound waves that are audible.

Any of various forms of apparatus, either fixed or mobile, used to provide audio information at an exhibition, archeological site etc.

(anatomy) Alternative form of auricularis superior.