lode (n.)youdaoicibaDictYouDict[lode 词源字典]
original Middle English spelling of load (n.), and custodian of most of the original meaning of "way, course, carrying." Differentiation in sense took place 16c. Mining sense of "vein of metal ore" is from c. 1600, from notion of miners "following" it through the rock.[lode etymology, lode origin, 英语词源]