Lyric discussion by simone345 

Cover art for Corbeau lyrics by Coeur de Pirate

Un corbeau = a raven.

However, thanks to a 1943 French film, it's also rather famously associated with a poison-pen writer who destroys a doctor/town, and I interpreted this song as referring to that film/idea.

Film: http://www.imdb.com/title/tt0035753/

Rhabiller means literally to put your clothes back on, which could figuratively mean to recover one's dignity, to act properly.