i Register
In some senses, hatful is marked as colloquial. Watch for register when choosing this word.
noun
The amount that will fit into a hat.
It was not quite enough time to tackle the wood-fired bathtub contraption, but it was plenty enough to motor up a long, winding hill to the north, where almost a year before we'd found hatfuls and shirtfuls of morel mushrooms with Erik's friend Breakfast.
A large amount or number.
a hatful of trouble
a hatful of money