Where does “pustule” come from?
pustule (Middle English) comes from Old French pustule, from Latin pustula, from Finnish pus-, from Proto-Indo-European bew- — "low-pitch humming noise".
Ancestry of “pustule”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old French | pustule | pustule |
| 2 | Latin | pustula | inflamed sore, blister, pustule |
| 3 | Finnish | pus- | — |
| 4 | Proto-Indo-European | bew- | "low-pitch humming noise" |