ankle
https://gyazo.com/e89930e704abd7ca464cb97c767e474f
source: By Nathorial - Own work, CC BY-SA 4.0
noun
the joint connecting the foot with the leg:
足首(の関節), くるぶし(→ body)
e.g. as modifier : an ankle injury.
the narrow part of the leg between the foot and the calf:
e.g. her slim ankles
e.g. I stood up to my ankles in snow
e.g. as modifier : ankle socks.
verb
1. with object informal leave:
e.g. he ankled the series to do a movie.
no object US informal walk.
｟俗｠ 歩く(walk)
2. no object (usually as noun ankling) flex the ankles while cycling in order to increase pedaling efficiency.
ORIGIN
Old English ancleow, of Germanic origin; superseded in Middle English by forms from Old Norse; related to Dutch enkel and German Enkel, from an Indo-European root shared by angle1.