This is a hardware description language (HDL), a special type of language that describes the structure of electronic and digital logic circuits. Basically, this means that Verilog is used to design computer chips and digital circuitry in general. 

Verilog, standardized as IEEE 1364, is a hardware description language (HDL) used to model electronic systems. It is most commonly used in the design and verification of digital circuits at the register-transfer level of abstraction.