By Greek, do you mean Modern or Classical. I looked in a large Classical Greek (Lewis, Short, and Jones) under βοκτος (
boktos) and βωκτος (
bōktos.). Zip. Online did a reverse lookup on balanced in the same (digitized) dictionary (
link). Nada. Looked in a smallish Modern Greek-English dictionary (Langenscheidt) under variant spellings (in Modern Greek β is a /v/ and μπ is /b/). Also in the English under balanced entry. Nothing. Nothing in a cursory Greek Wikipedia search. Quick googling suggests it may be a name. Was this word of mouth or on a website or what? (I don't think it's a Greek word.)
Not sure what to make of tsuwm's Google Book finding in a comic novel about a secret society. See the reviews of the book on this Charles Portis site (
link).