Entomology definition of Breast September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Breast Entomology definition of Breast: the under surface of thorax or sternum. Breast Entomology explanationBreast Entomology meaningEntomology Breast definitionReviews & Comments