モグラ（動物）、ほくろ、モル(化学) など
She had a tiny mole on her cheek.
彼女は頬に小さなほくろがあった。
A mole finds its food by smell alone.
もぐらは匂いだけで食べ物を見つけます。
2 a small dark brown mark on the skin that is slightly higher than the skin around it
3 someone who works for an organization while secretly giving information to its enemies