The infra-orbital groove is a depression located under the eye socket that transmits the infra-orbital nerve and vessels. In medical terminology, it is also referred to as the infra-orbital sulcus or the maximum sulcus of the infra-orbital canal. Additionally, it may be called the infra-orbital fissure, groove or canal. The Latin equivalent is sulcus infraorbitalis. It is important to understand the various synonyms of this term as they may be used interchangeably in medical literature or by healthcare professionals. Furthermore, when assessing facial anatomy, it is essential to be familiar with all the possible names that could be used to describe this anatomical feature.