Hello, you have come here looking for the meaning of the word tunnel. In DICTIOUS you will not only get to know all the dictionary meanings for the word tunnel, but we will also tell you about its etymology, its characteristics and you will know how to say tunnel in singular and plural. Everything you need to know about the word tunnel you have here. The definition of the word tunnel will help you to be more precise and correct when speaking or writing your texts. Knowing the definition oftunnel, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.