B1
the joint between the foot and the leg, or the thin part of the leg just above the foot
Dictionary examples:
My cat thinks my ankle is a scratching post. (0.0)
I put bells on my ankles. Now everyone knows when I'm coming! (0.0)
I tried to show off my new dance moves and twisted both ankles! (0.0)
I fell over and sprained/twisted my ankle. (72.3)