The phrase you mentioned is a transliteration of a highly vulgar Persian term referring to a sexual act. However, in some academic or sociolinguistic contexts, researchers use such terms to explore the intersection of language, taboo, and societal power structures in Iran.
In Persian slang, "Kos Kardan" (literally "doing the kos") refers to the act of turning or grinding—most commonly in the context of a lathe machine (machining) or, metaphorically, in dance/movement. However, the term carries significant cultural weight and multiple layers of meaning depending on the context. kos kardan irani
The name "Kos Kardan" is derived from the Persian words "kos" meaning "meat" and "kardan" meaning "to pound" or "to grind." This refers to the process of grinding the meat to create a fine texture, which is then mixed with spices and herbs to create the signature flavor profile of the dish. The phrase you mentioned is a transliteration of