Definition of fill a niche
- This product fills a niche in the market.
: to put into as much as can be held or conveniently contained
: to supply with a full complement
: to cause to swell or billow
: a full supply
: something that fills: such as
: material used to fill a receptacle, cavity, passage, or low place
What made you want to look up fill a niche? Please tell us where you read or heard it (including the quote, if possible).