Answer:
I can speak with my hard metal tongue. But I cannot breathe for I have no lung
You bind me and I walk. You loosen me and I stop. What am I?
The more you look at me The less you see.
I am the word that has three syllables and twenty six letters.
I sit in a corner while travelling around the world.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.