Entomology definition of Crook September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Crook Entomology definition of Crook: the hook or recurved tip of the antenna in Hesperidae. Crook Entomology explanationCrook Entomology meaningEntomology Crook definitionReviews & Comments