noun, noun which may take the genitive case particle 'no'
Refers to feet without socks, stockings, or shoes. Often used in contexts like walking barefoot, being barefoot indoors, or describing the state of the feet.
I like going barefoot in the summer.
彼女は素足にサンダルを履いていた。
She was wearing sandals on her bare feet.
素手 means 'bare hands' while 素足 means 'bare feet'; both follow the same 素+body part pattern and are easy to mix up in form.
Compound of 素 (す, 'bare, unadorned') and 足 (あし, 'foot'). The reading すあし is a straightforward combination of the two elements.