lacuna

(lak-u’nah), pl. /acu’ne (L.]. A_small pit, hollow, or depre ion. absorption 1., How ship's 1., small depre ions of bone under the periosteum., cavities filled with air, as in the hairs. 1. cerebri, the cerebral infundibulum. inter villous 1., any one of the blood-spaces of the placenta in which the fetal villi are found. 1, later a’lis. Same as purasincidal sinus. See Sinus. 1. mag’na, the largest of the orifices of the glands of Littré. Morgagni's 1., the lacuna of the urethra. 1. musculo’rum, a muscle gap. 1. pharyn’gis, a depre ion at the pharyngeal end of each eustachian tube. 1. of the ure depre ions or follicles in the mucous membrane of the prethra, especially numerous in the region οἱ