English word pus comes from Proto-Indo-European *peu-
| Dictionary entry | Language | Definition |
|---|---|---|
| *peu- | Proto-Indo-European (ine-pro) | |
| puris | Latin (lat) | |
| pus | English (eng) | A whitish-yellow or yellow substance composed primarily of dead white blood cells and dead pyogenic bacteria; normally found in regions of bacterial infection. (rare) To emit pus. |