blauer Dunst
German
Etymology
Literally: “blue dust”. From blau referring to delusion as in the sense “drunk” and in blaues Wunder (“something utterly unexpected”). The sense “cigarette smoke” thence, humorously after the greyish, bluish colour.
Noun
blauer Dunst m (genitive blauen Dunstes, no plural)
- (idiomatic) idle talk, void promises
- (idiomatic) cigarette smoke