What English word has three consecutive double letters?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

It is always ahead of me yet I can never see it. What is it?

What runs around the whole yard without moving?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

What will you call your mother's brother's brother-in-law?

Can you name some countries which do not have the alphabet 'A' in them?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?