scouring rush

9.9

A plant with rough, jointed stems that people once used to clean pots

noun
/ˈskaʊərɪŋ rʌʃ/

Specialized

: cola de caballo

The scouring rush grows near the riverbank.
scouring rush horsetail

Examples

I found a patch of scouring rush along the riverbank that can grow up to two feet tall.
Botanists often identify scouring rush by its unique, rough-edged green stems.
Early settlers used the abrasive stems of scouring rush to clean their pots and pans.
The scouring rush grew abundantly along the riverbank, its tough stems brushing against the rocks.
Many gardeners appreciate the scouring rush for its unique appearance.
The scouring rush is an evergreen plant that has been traditionally used for cleaning kitchen utensils.
Many gardeners appreciate the scouring rush for its unique, rough-edged stems and low maintenance needs.

Synonyms

Equisetum hyemale

vsscouring rush

Specialized

9.9

A plant with tall rough green stems once used to clean pots

is the traditional common name rather than the scientific species name

Equisetum hyemale robustum

vsscouring rush

Specialized

9.9

A green plant with thin rough stems once used to scrub pots and metal tools

is the broader historic common name not limited to a subspecies

rough horsetail

vsscouring rush

Specialized

9.6

An evergreen plant with rough, jointed stems that people use to scrub pans

is the general historic name rather than a precise botanical label

Surface Forms

scouring rush singular

scouring rushes plural

Morphology

scouring + rush

The compound is directly compositional: 'scouring' (scrubbing) + 'rush' (a marsh plant) yields a plant used for scouring utensils. This follows a common noun-noun naming pattern, so a B1 learner who knows both constituent meanings can infer the MWE's sense.

Etymology

The plant scouring rush gets its name from how people used it: its rough, jointed stems were great for scouring pots and pans, and rush is a word for a kind of plant. So the name links the plant to the idea of 'cleaning'.