Wiktionary
n. A parking space sized area used for recreational or beautification purposes.
Wikipedia
A parklet is a sidewalk extension that provides more space and amenities for people using the street. Usually parklets are installed on parking lanes and use several parking spaces. Parklets typically extend out from the sidewalk at the level of the sidewalk to the width of the adjacent parking space.
Parklets are intended for people. Parklets offer a place to stop, to sit, and to rest while taking in the activities of the street. In instances where a parklet is not intended to accommodate people, it may provide greenery, art, or some other visual amenity. A parklet may accommodate bicycle parking within it, or bicycle parking may be associated with it.
A parklet may be thought of as permanent, but must be designed for quick and easy removal for emergencies or other reasons such as snow removal without damage to the curb or street. As initially conceived, a parklet is always open to the public. However, some cities have allowed restaurants to create parklets that are not open to the public such as Long Beach, California, Fargo, North Dakota and Montreal, Quebec.
Usage examples of "parklet".
Logan Square, a rectangular green parklet with a great tall stone column towering over the half dozen or so streets which intersected there.
The buildings, whether dwellings, offices, workplaces, or stores each had a neat parklet but were otherwise without ornamentation.
There were hanging gardens, miniature forests, waterfalls, small game preserves, lakelets, parklets, and playgrounds.