| PO | a European river |
|---|---|
| PO | a radioactive metallic element that is similar to tellurium and bismuth |
| PO | a noncommissioned officer in the navy with a rank comparable to sergeant in the army |
| PO | the number of a letter box at the post office where mail is collected |
| PO | the number of a letter box at the post office where mail is collected |
| PO | a European river |
| PO | (British) humorless and disapproving |
| PO | chiefly perennial grasses of cool temperate regions |
| PO | slender European grass of shady places |
| PO | valuable meadow and pasture grass in Europe and especially central United States having tall stalks and slender bright green leaves |
| PO | the grasses: chiefly herbaceous but some woody plants including cereals |
| PO | cook in a simmering liquid |