| Ostrava | Ostrava |
| Ostrau | Ostrava |
| Ostmark | ostmark |
| Osteria | osteria |
| Osthang | eastern slope |
| Straf- | punitive |
| Strang | skein string cordon canal |
| Struma | goitre |
| Strafe | punishment penalty |
| Strahl | ray beam jet |
| Strand | beach shore |
| Straps | suspender belt |
| Strass | rhinestone diamanté paste strass |
| astral | astral |
| strack | straight |
| straff | firm taut tautly tense tight tightly erect strict |
| stramm | taut tight |
| Trave | Trave |
| Vltava | Vltava |
| Ostasiat | East Asian |