The A Glossary of Tudor and Stuart Words by Walter W. Skeat (1914; available on Archive.org) contains an entry for bever ("a short intermediate repast") that also mentions a related word in Modern Provencal. Unfortunately, in the scanned version of the dictionary on Archive.org, that Provencal word is not very readable. See the image below.
I assume that the word is either "grandbéure" or "grand-béure". "Béure" is listed in the lexique provençal but the word I'm looking for is not. I don't have access to the Glossaire cited in the entry (it isn't even listed in Skeat's list of references), so I'm hoping that someone on this site can confirm what the word is (with or without a hyphen).