Home › Words › S › silverlinesilverlinesilverline means any of various lycaenid butterflies of the genus Spindasis, having silver coloured stripes on the underwings.EtymologyFrom silver + line.nounAny of various lycaenid butterflies of the genus Spindasis, having silver coloured stripes on the underwings.Definitions & examples from Wiktionary (CC BY-SA 3.0).