a. Made of leather; consisting of leather; as, a leathern purse. “A leathern girdle about his loins.” Matt. iii. 4. [ 1913 Webster ]

n. 1. (Zool.) The sordid friar bird of Australia (Tropidorhynchus sordidus). [ 1913 Webster ]

2. [ from the leather collar that was once part of their uniform. ] A member of the United States Marine Corps; a United States Marine. [ slang ] [ PJC ]