A district in which it is illegal to create smoke and where only smokeless fuel may be used.
 Example sentencesExamples
-  Bradford Health Committee is recommending that 20 smokeless zones be established in the city, one in the central area and the remainder covering housing estates in the outskirts.
 -  And isn't the New Town supposed to be a smokeless zone?
 -  Scarborough Council says it may have to make at least part of the village a smokeless zone, to ensure Government targets for air quality are met.
 -  Bradford may soon have its first smokeless zone if a special meeting of the Corporation Health Committee, which is being called to consider the subject, approves the project.
 -  A five-strong deputation met Bolton Health Committee members yesterday to discuss problems and complaints which have arisen from the introduction of a smokeless zone.