Entomology definition of Allux September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Allux Entomology definition of Allux: next to the last joint of tarsus; in Rhynchophora. Allux Entomology explanationAllux Entomology meaningEntomology Allux definitionReviews & Comments