boo

Isn't a DSL another name for an app which solves a particular problem?

Hi, I am learning boo (got the ebook), but one question I have is what exactly is a DSL? Better question, if a DSL is geared towards a specific problem, then isn't it just another name for really an application space (e.g. Word Processing, DBMS, maths processing software), all solve their own problems. I ask this because recently a cou...