alveololingual groove

1. that part of the oral cavity proper, on each side of the frenulum linguae, between the tongue and the mandibular alveolar process or ridge;

2. in the embryo, the groove on each side between the lingual primordium and the alveolar elevations of the mandible. Syn: alveololingual sulcus, gingivolingual groove, gingivolingual sulcus.