What is the diminutive of park?

The diminutive of "park" is "parklet." A diminutive is a Word that has been modified to convey a slighter degree of its root meaning, to convey the smallness of the object or quality named, or to convey a sense of intimacy or endearment. In this case, adding the suffix "-let" to "park" creates a smaller version of a park, often used to refer to a small public space or garden.