Definition of "improver" in English

noun

1. Something that, or someone who, improves something.

2. (obsolete) Specifically, a person who improves land or property, a landscaper.

3. One who improves his or her performance, one who shows improvement (of individuals or groups).

4. A substance added to cause improvement (especially to a foodstuff).

5. (historical) A pad worn by women to make the dress hang properly.

noun

1. One who performs improv; an improviser.