Definitions

1. adjective

producing no smoke, especially when burning

“The smokeless fireplaces were very popular in urban areas.”

2. adjective

not involving or producing smoke, especially from a fire

“The new smokeless gunpowder was safer to use.”

3. adverb

in a smokeless manner

“The soldiers moved smokeless through the forest, avoiding detection.”

4. noun

something that is smokeless, especially a fuel or a fire

“The smokeless fuel was used to power the generators.”