What word is pronounced the same if you take away four of its five letters?

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

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

You can see it everyday, But cannot touch it at will. What is it?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

What runs around the whole yard without moving?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

People put me on the table and cut me but do not eat me. What am I?