alkanet (n.)youdaoicibaDictYouDict[alkanet 词源字典]
"dye material from bugloss plant roots," early 14c., from Spanish alcaneta, diminutive of alcana, from Arabic al-hinna (see henna). As the name of the plant itself, from 1560s.[alkanet etymology, alkanet origin, 英语词源]
alkaneyoudaoicibaDictYouDict
"Any of the series of saturated hydrocarbons including methane, ethane, propane, and higher members", Late 19th century: from alkyl + -ane2.