Boot

To start up or reset a computer.

In heating and cooling system distribution ductwork, the transformation pieces connecting horizontal round leaders to vertical rectangular stacks.

When a computer is switched on it is said to `boot up'. This term comes from the phrase, `Pulling yourself up by your bootstraps.' Before a computer is ready to be used, it must load the programs that it needs from its disks, but this means that it must have a program of some sort available in order to be able to load the programs it needs! The loading program is called a bootstrap.