kesha (noun) /kee shuh/- hip-hop slang for kush, a high-grade strain of marijuana. Similar to how Mary Jane is slang for marijuana.

--Example: I'm riding roun' wit that nina... You know we smokin' on KESHA... Some people LOVE kesha. Almost as much as suburban teenagers love KE$HA and suburban moms love Kia’s. [and there own private stash of Kesha]