Entry 1 sense Webster, 1913 Ranula /(răn"ū̇*lȧ)/ · Ran·u·la · IPA /ˈɹæn.jəl.ə/ 01 n. A cyst formed under the tongue by obstruction of the duct of the submaxillary gland. 1. A cyst formed under the tongue by obstruction of the duct of the submaxillary gland.(Med.)