A raven or crow, particularly used in Scottish and Northern English dialects.
From Middle English and Old Norse 'hrafn' through 'corbey.' It's primarily a dialectal or archaic term, more common in Scottish English where 'corby' remains in use for corvid birds.
Corby is a word that's mostly dead outside of Scotland now, but it survives in place names like Corby (a town in England) where it probably referred to the ravens that lived there. Words like this show how language constantly shrinks and expands—some words disappear completely while others we use every day are surprisingly new.
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