sell: [OE] The underlying etymological meaning of sell is ‘give up, hand over’, but gradually the notion of handing something over in exchange for something else, particularly money, led to its present-day sense. Both meanings co-existed in Old English, but the original one had largely died out by the 14th century. The word comes from a prehistoric Germanic *saljan, which also produced Swedish sälga and Danish sælge ‘sell’. The noun sale is a product of the same base. => sale[sell etymology, sell origin, 英语词源]