filling

filling is a   Noun

Definition:

[1] 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.

[2] The woof in woven fabrics.

[3] Prepared wort added to ale to cleanse it. Back filling. (Arch.) See under Back, a.

Synonyms: