| OA | an association of countries in the western hemisphere |
|---|---|
| OA | a shelter serving as a place of safety or sanctuary |
| OA | a fertile tract in a desert (where the water table approaches the surface) |
| OA | a kiln for drying hops |
| OA | a building containing an oast (a kiln for drying hops) |
| OA | seed of the annual grass Avena sativa (spoken of primarily in the plural as `oats') |
| OA | annual grass of Europe and North Africa |
| OA | highly malignant carcinoma composed of small round or egg-shaped cells with little cytoplasm |
| OA | thin flat unleavened cake of baked oatmeal |
| OA | of or related to or derived from oats |
| OA | United States writer (born in 1938) |
| OA | English conspirator who claimed that there was a Jesuit plot to assassinate Charles II (1649-1705) |