rusty-coat
/ˈrʌstɪkəʊt/(also rusticoat) Chiefly US. Now chiefly historical
adjective
Of a fruit: having a russet skin. Usually attributive.
noun
Any of numerous varieties of apple having a russet skin; an apple of such a variety, a russet apple.
Origin
Late 18th century; earliest use found in John Adams. From rusty + coat.