👉 In the context of physics and engineering, "keener" typically refers to a device or system that is designed for high efficiency or performance. It is often used in applications where energy must be efficiently transferred from one place to another, such as in industrial processes, power generation, or transportation systems. For example, a keener device might be an electric motor that can deliver more torque than its less efficient counterpart, allowing it to operate at higher speeds and with greater power. It could also be used