Not much help with the definition. It is pronounced with a long a.
I was at the grocery store looking for some grapes for the Little Prince. They didn't have the best selection so I checked out the apples (now that he can eat them without being cut up). Not much there either. Then I spotted these. He said they are pretty good. I didn't taste any grape, but they did smell a bit grape-ish. It was strange to be eating an apple yet smelling grapes. Interesting.
