Those are Russian cards. The "B" is read as "V" in Russian, and stands, here, for valet, which is a (transliterated) cognate in English, since both languages loaned the word from French.
As a verb, to isle can mean "to place on or as if on an isle". An example from literature is "You are isled from accustomed cares and worries - you are set in a peculiar nook of rest." (The Pagan Papers by Kenneth Grahame)
For everyone looking for the hidden code, read the answers of the top 3 boxes left to right (ASK). Then, go down a box and read right to left (AND). Just keep doing that, 3 letters per row. Not the best explanation, but hopefully you get it.
As slang it's only an abbreviation of a real word, like app or vet.
Also, "jawful" and "pawful" ought to be accepted in addition to "lawful," or else the question should be revised to something else...
Darn.
For "verse": averse, everse
For "raked": braked, craked (as the past of crake, what the crow does)
For "acre": nacre, sacre
For "have": Bhave (proper noun), chave, shave, thave
For "arco": Harco, Marco (proper noun), narco
For "oath": loath, Roath (proper noun)
For "vine": avine, ovine
For "heel": jheel (used mainly in India), sheel (to shell), wheel
Instead of removing the words, I'd just accept the collisions as valid but mark the original ones.