A squirarch is a person who owns land and has a title, but is not a lord.
The word squirarch is very old and not used much now. It makes people think of old stories and of people who have a lot of land.
Examples:
The squirarch owns a lot of land.
The squirarch has a big house.
The squirarch's land is very big.
The squirarch's dog is very big, too!
The squirarch's land is as big as the whole town!
The squirarch's land is so big, it takes all day to walk around it.