One of the mysteries of the English language finally explained.
A make of polish (formerly a trademark); specifically a brand of floor polish.
Late 19th century; earliest use found in The Trade Marks Journal. Apparently from Urdu ronaq lustre (or its cognate in a related language) from Persian raunaq from Arabic raunaq, all in the same sense.
with object To polish with Ronuk.
Early 20th century. From Ronuk.
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