The mechanical advantage of a pulley system with four supporting ropes is 4. This means that the system can lift a load four times heavier than the input force applied.
The four letter word that means, "I forbid," is veto.veto
A bitt is a post mounted on a ship's bow for fastening cables and ropes.
There are four support ropes attached to the pulley in the image.
The four letter word is dawn.
fern
Exit
A four letter word meaning the foundation of something is base.
Kiss.
huge
anti
stun