- to fill in: The old stream beds have been infilled with sediment.
- the planned conversion of empty lots, underused or rundown buildings, and other available space in densely built-up urban and suburban areas for use as sites for commercial buildings and housing, frequently as an alternative to overdevelopment of rural areas.
- of, relating to, or involving the use of infill in urban planning: infill condominium projects; infill office buildings and retail space.
- the act of filling or closing gaps, etc, in something, such as a row of buildings
- material used to fill a cavity, gap, hole, etc
- an acrylic gel application that fills in the gap between a false nail and the root of the real nail, which is created as the real nail grows
