# orf

> English word · Noun · IPA /ɔːf/ · frequency rank #70,136

## Definitions
1. An exanthemous disease caused by a parapox virus, occurring primarily in sheep and goats but also capable of infecting humans.

## Etymology
From Old Norse hrufa (“scab”), from Proto-Germanic *hreubaz (whence also dandruff).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/orf