Entomology definition of Eruca September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Eruca Entomology definition of Eruca: broadly a larva: more specifically a caterpillar. Entomology Eruca definitionEruca Entomology explanationEruca Entomology meaningReviews & Comments