A leafless annual parasitic vine of the genus Cuscuta having whitish or yellow filamentous stems; obtain nourishment through haustoria WordNet 3.0 & Open English WordNet

Any of about 100-170 species of yellow, orange or red (rarely green) parasitic plants of the genus Cuscuta. Formerly treated as the only genus in the family Cuscutaceae, recent genetic research by the Angiosperm Phylogeny Group has shown that it is correctly placed in the morning glory family, Convolvulaceae. Wiktionary

Parasitic plant (of about 100-170 species) of the genus Cuscuta. Wiktionary (translation)