Do you know what a pilgrim is? They were people who came to America a long, long time ago from a place called England. They came to America to start a new life because things were hard in England.
When the pilgrims came to America, they dressed differently than we do today. One thing they wore was a hat called a pilgrim's hat. It looks like a triangle and is usually black.
The hat has a big, wide brim that sticks out around the sides. This helped the pilgrims stay cool in the sun and it also kept the rain off their faces when it was wet outside.
The pilgrims wore their hats everywhere they went, even when they were eating dinner! They would take them off to show respect when they talked to someone important, like the governor.
So that's what a pilgrim's hat is! It's a special hat that the pilgrims wore when they came to America a long time ago.