Strip used to give a level surface for attaching wallboard WordNet 3.0 & Open English WordNet

In construction, furring are strips of wood or other material applied to a structure to level or raise the surface, to prevent dampness, to make space for insulation, to level and resurface ceilings or walls, or to increase the beam of a wooden ship. Wikipedia

Thin strips of material used in building construction; the process of installing such strips Wikidata

A strip of material used to prepare a wall for plastering, or to provide an air space. Wiktionary

A strip of material used to prepare a wall for plastering. Wiktionary (translation)