A domino without points on one or both of its divisions.
“the double blank”
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 .
verb
To ignore (a person) deliberately.
“She blanked me for no reason.”
To prevent from scoring, for example in a sporting event.