abandoned cat; stray cat
Refers to a cat that has been abandoned by its owner or is living as a stray. Often used in contexts of rescue or pity.
I found an abandoned cat in the park and took it home.
I volunteer to rescue stray cats.
Compound of 捨て (sute, 'throwing away', the continuative form of 捨てる) and 猫 (neko, 'cat').