nounBritish • informal
- A very thick yellowish fog: he was alone in one of London’s infamous pea-soupersMore example sentences
- The warm Easter weather last week resulted in a thick pea-souper one morning.
- Not only that, it began in a pea-souper of a fog, caused by the smoke from the pre-match fireworks.
- Since the introduction of cleaner fuels, killer pea-soupers have been consigned to the past.