lacrimal groove lacrimal groove on the nasal surface of the body of the maxilla, in front of the opening of the sinus is a deep groove, the lacrimal groove (or lacrimal sulcus), which is converted into the nasolacrimal canal, by the lacrimal bone and inferior nasal concha; this canal opens into the inferior meatus of the nose and transmits the nasolacrimal duct. lacrimal grooveleft lacrimal bone. orbital surface. enlarged. (lacrimal groove visible at left.)detailsidentifierslatinsulcus lacrimalis maxillaeta98a02.1.00.081 a02.1.09.003ta2746fma57613anatomical terms of bone additional images horizontal section of nasal and orbital cavities.