That which is used to fill a cavity or any empty space, or to supply a deficiency; as, filling for a cavity in a tooth, a depression in a roadbed, the space between exterior and interior walls of masonry, the pores of open-grained wood, the space between the outer and inner planks of a vessel, etc.
- An act or instance of filling.
- Something used to fill a space, cavity, or container: a gold filling in a tooth.
- An edible mixture used to fill pastries, sandwiches, or cakes: a pie filling. See Regional Note at frosting.
- The horizontal threads that cross the warp in weaving; weft.