noun, feminine/oˈɾuɡa/plural: orugas
caterpillar (insect or vehicle); arugula, rocket (plant)
Synonyms: cuncuna, rúcula
Inherited from Old Spanish oruga, from Vulgar Latin urūca, from Latin ērūca (whence English arugula), from Proto-Indo-European *ǵʰer(s)-uk-eh₂, from Proto-Indo-European *ǵʰers- (“to bristle”).