From Longman Dictionary of Contemporary Englishcalfskincalf‧skin /ˈkɑːfskɪn $ ˈkæf-/ noun [uncountable] the skin of a calf, used for making shoes, bags etc
Examples from the Corpus
calfskin• On their feet both men and women wear half-length boots of yellow calfskin trimmed with a red stripe on the turned-down uppers. 