A plant with thick leaves that grows close to the ground and is often used in gardens or as a ground cover.
Orpin is a simple, common plant that is often used to make gardens look nice.
Examples:
The orpin is green and grows close to the ground.
I planted some orpin in my garden.
The orpin is good for covering the ground.
The orpin is a nice plant for my garden.
I have so much orpin in my garden, it looks like a green carpet!
The orpin is a very simple and pretty plant.