any of several horsetails, esp Equisetum hyemale, that have rough-ridged stems and were formerly used for scouring and polishing
scouring rush in American English
(ˈskaʊrɪŋ)
US
horsetail (sense 2)
scouring rush in American English
noun
any of certain horsetails, esp Equisetum hyemale, used for scouring and polishing
Also called: Dutch rush
Word origin
[1810–20]This word is first recorded in the period 1810–20. Other words that entered Englishat around the same time include: knockout, rationalize, realism, technique, triangulation