of or having to do with the filling in of remaining available space: an infill housing project uptown
- The use of vacant land and property within a built-up area for further construction or development.
- A substance or material used to fill in: a steel structure with an infill of redwood sheathing.
(third-person singular simple present infills, present participle infilling, simple past and past participle infilled)
- To fill in a space, hole or gap.
- That which fills in a space, hole or gap.