A person who rows a small, light boat with oars.
Scullers are often seen on calm water, like lakes or rivers.
Examples:
The sculler rows the boat on the lake.
I want to be a sculler when I grow up.
The sculler's boat is very small.
The sculler's boat is so small, it looks like a toy!
The sculler rows so fast, it's like they have superpowers!
I saw a sculler on the river today and I waved to them.