noun

• A knob or disc that goes through a loop to fasten clothes.
• A small device you press with your finger to make something work, like a toy or a machine.
• An on-screen control you can click to do something on a computer.
• A badge worn on clothes, often with a message or picture.
• A small round part of a flower before it opens.
• The head of a small mushroom before it grows bigger.
• A small round piece of something, like a ball or a dot.
• A small round mark on a cat's fur.
• A small piece of wood or metal that turns to fasten something, like a door.