Block

1. When referring to a hard disk drive or other storage medium a block is a segment of a large area that can be assigned to store data. 
2. When referring to computer programming a block is a conditional statement or loop in code. Below is an example of a conditional statement block.
   
   if (conditional statement) {
        print "Computer Hope";
   }

Also see: Burst, Hard disk drive definitions, Memory definitions, Programming definitions, Super block