| AER | the study and treatment of disorders associated with flight (especially with space flight) |
|---|---|
| AER | a trademark for a loosely woven cotton fabric that is used to make shirts and underwear |
| AER | any habitation at a high altitude |
| AER | the lofty nest of a bird of prey (such as a hawk or eagle) |
| AER | characterized by lightness and insubstantiality |