The story
From sun + dew. Cognate with Dutch zonnedauw, Icelandic sóldögg, German Sonnentau.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Any of a group of insectivorous plants in the genus Drosera that catch insects by sticky droplets ("dew") at the end of hairs on the leaves and grow in boggy ground all over the world. Full definition →