We don't have synonyms for blanke yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are blank, blake and blanks.
(adj) :
Obsolete spelling of blank. [(archaic) White or pale; without colour.]
(n) :
Obsolete spelling of blank. [(archaic, historical, obsolete) A small French coin, originally of silver, afterwards of copper, worth 5 deniers; also a silver coin of Henry V current in the parts of France then held by the English, worth about 8 pence .]
(adj) :
Obsolete spelling of blank. [(archaic) White or pale; without colour.]
(n) :
Obsolete spelling of blank. [(archaic, historical, obsolete) A small French coin, originally of silver, afterwards of copper, worth 5 deniers; also a silver coin of Henry V current in the parts of France then held by the English, worth about 8 pence .]