My French lessons are about 55 years old and very rusty; but here’s the definition From the online Merriam Webster:
1. a flat round cake of pastry often topped with fruit
2. a food prepared and served in the shape of a flat round cake
I think ‘flatness’ is the key :-)
-JT
A guy is sitting alone at a cafe table and the waitress comes over and asks for his order.
"I'd like to have a "quickie", please", he answered.
Flushed and offended, the waitress turns around and storms off. She gains her composure and approaches him again. "What would you like to have, sir?", she tentatively asks.
"I'll have the "quickie".", he says again.
She turns away red-faced and storms off once more. At that time a gent sitting near to him leans over and says, "Hey, buddy, just so you know, that's pronounced "quiche". ;o)