noun
sole of a shoe
Refers to the bottom part of a shoe that touches the ground.
この靴は靴底がすり減っている。
The soles of these shoes are worn down.
新しい靴底に張り替えてもらった。
I had the soles replaced with new ones.
noun
Refers to the flatfish, usually written in kana. The kanji 靴底 is rarely used for this meaning.
See also: シタビラメ
くつぞこは平たい魚で、海底に住んでいる。
The sole is a flat fish that lives on the sea floor.
シタビラメ is a more common name for the sole fish, while くつぞこ is an alternative name often used in culinary contexts.
Compound of 靴 (kutsu, 'shoe') + 底 (soko, 'bottom'). The fish sense is an extension from the shape resembling a shoe sole.