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night soil

night soil

1 9.9
Human waste collected at night and used to fertilize fields
  • noun
  • NSFW
translation icon : excremento nocturno
  • Night soil, dung, and recycled crop wastes have been the traditional means of returning nitrogen to the soil system.
  • night-soil man

Examples

  • In many rural areas, people rely on night soil as a natural fertilizer for their gardens.

  • The odorous night soil cart, pulled by hand, quickly picks up and disposes of its cargo.

    Fiction book (1996)
  • Ten buckets filled with night soil were reeking.

    Fiction book (1995)
  • Then they shouldered their loads of night soil and set out for Elm Village, where they lived.

    Fiction book (1995)
  • But they get the night soil pots out, emptied, washed, and put back before the bicycles and trams fill the streets.

    Fiction book (1996)
  • In Atlanta, backyard privies and outhouses were the norm, and scavengers and night-soil men remained popular.

    Academic text (2010)
  • Like most other cities of the time, Atlanta depended on night-soil men to remove waste from overflowing private privies and water closets.

    Academic text (2010)
  • Farmers often use night soil to enrich their fields and promote healthy crop growth.

  • The collection of night soil was a common practice before modern sanitation systems were established.

Synonyms

dung
vsnight soil
57 2.8

The waste animals produce that is often used to fertilize soil

is human waste collected and used as fertilizer rather than animal waste
cow manure
vsnight soil
  • NSFW
2 1.8

Dung from cows that people put on soil to help plants grow

is human excrement gathered for fertilizing rather than animal waste
biosolid
vsnight soil
  • Specialized
1 5.8

Treated sewage solids used as fertilizer to improve soil

is untreated human excrement collected and used directly as fertilizer

Surface Forms

night soil singular
night soils plural

Morphology

night + soil

The meaning 'human excrement collected and used as fertilizer' is not directly derivable from 'night' (a time period) + 'soil' (earth/dirt); a B1 learner would likely interpret it as 'soil at night' or be uncertain. The specialized, historical/technical sense is idiomatic and not predictable from the constituent meanings, so learners need prior exposure.

Etymology

The compound night soil comes from the simple image of waste taken from homes at night and spread on the soil of fields to help crops grow. So the phrase means 'human waste' used as 'fertilizer'.