The cash equity segment in Zerodha refers to the section of the stock market where investors can buy and sell stocks for delivery, also known as equity delivery trades. In this segment, you are required to pay the full price of the stock upfront, and the stocks are then delivered to your Demat account, where you can hold them for as long as you want. Zerodha offers a product type called CNC (Cash and Carry), which is used for equity delivery trading without any leverage.