Gas-burner n. : The jet piece of a gas fixture where the gas is burned as it escapes from one or more minute orifices.

Example:
How to build a natural gas burner?

Taxonomy
oxygen, flame, gases, Combustion, Gas burner, flame temperature, Propane burner, natural gas, free encyclopedia, burner, Acetylene, metal, heat, fuels, bunsen flame, adiabatic, colour, steel rails.

Defination from the web:
gas burner is a device to generate a flame to heat up products using a gaseous fuel such as acetylene, natural gas or propane. ... For laboratory uses a natural gas fired Bunsen burner is used. ...