designating a family (Droseraceae, order Nepenthales) of dicotyledonous plants, including the Venus' flytrap
See sundew in American Heritage Dictionary 4
sun·dew
noun
Any of several insectivorous plants of the genus Drosera, growing in wet ground and having leaves covered with sticky hairs. Also called drosera.
Origin: Obsolete Dutch sondauw (translation of Latin rōs sōlis, dew of the sun) : son, sun (from Middle Dutch sonne; see sāwel- in Indo-European roots) + dauw, dew (from Middle Dutch dau; see dheu-1 in Indo-European roots).