Definition of home improvement in US English:

home improvement

noun

  • An alteration made to improve the appearance or value of one's home or estate; the action or practice of making such alterations.

Origin

Early 18th century (in an earlier sense). Partly from home + improvement, and partly from home + improvement.

Pronunciation

home improvement

/ˌhəʊm ɪmˈpruːvm(ə)nt/