A bitch and or lady of the night. The rwandan slang comes from the song Cucazi by nat uwakera.
It’s used to describe a woman/girl who has many casual sexualpartners.
Person 1: Ya cucazi man! Twaratandukanye ushaka wakwiyongoza ntaribi.
Person 2: Shaka cucazi iri mu kazi uve kuri under 18 bro!