Ah, I see -- a zucchini, according to my CONCISE OXFORD DICTIONARY. Why did I ask? A brief review by Helen Sandler of BEST LESBIAN EROTICA 2008, refers to my story, "The Ant Queen," thus:
"When a teenager finds her best friend's uppity mum trapped in a PVC insect costume, she stuffs her with a brace of courgettes."
Cool. I never hear that word before. I think "courgette" actually sounds sexier than "zucchini"!