What is referred to by 'a hat'?

Based on the clue 'a has been knows that this phrase for a short live...', what is the answer? Based on the clue 'a hasbro machine made them in the 70s you can mak...', what is the answer? Based on the clue 'a hasty dessert or perhaps youd prefer the tapioca', what is the answer? Based on the clue 'a hat with a rounded crown shares its name with th...', what is the answer? Based on the clue 'a hatchet is a small one', what is the answer? Based on the clue 'a hated person may be burned in this symbolic way ...', what is the answer? Based on the clue 'a haunted castle full of mummies is a new attracti...', what is the answer? What is referred to by 'a havana horn'?