noun, noun which may take the genitive case particle 'no'
smokeless
Describes something that produces no smoke, such as fuel, a stove, or a cigarette. Often used in compound nouns like 無煙炭 (anthracite) or 無煙火薬 (smokeless powder).
このストーブは無煙だから室内でも安心だ。
This stove is smokeless, so it's safe even indoors.
Smokeless tobacco doesn't produce smoke, but that doesn't mean it's harmless.
anthracite; smokeless coal
smokeless powder; smokeless gunpowder
Compound of 無 (mu, 'without') and 煙 (en, 'smoke').