iron brown
/ˌʌɪən ˈbraʊn/noun
A dark brown or reddish-brown colour; any of various brown pigments containing iron.
- Now chiefly in the context of ceramics..
adjective
Of a dark brown or reddish-brown colour.
Origin
Early 18th century; earliest use found in Philosophical Transactions of the Royal Society of London. From iron + brown.