Noun has 2 senses

• improver(n = noun.person) do-gooder, humanitarian - someone devoted to the promotion of human welfare and to social reforms;

Derived form verb improve₁

• improver(n = noun.artifact) add-on, addition - a component that is added to something to improve it; "the addition of a bathroom was a major improvement"; "the addition of cinnamon improved the flavor"


Derived form verb improve₁