BOURRELET

(Fr.), n. Bur-re?l-e?. 1. In general, any elevation of a surface of a Somicvmarical shape (e. g.. the vesicular border of a peck). 2. In solipeds, the elevation of the skin at the beginning of the matrix of the hoof. [A, 38.] 3. A longitudinal thickening or band on the edge, spire, or external surface of certain spirivalve shells, cutting the turns of the spire transversely or at a right angle. [L, 180.|—B. all an toïdien. In the embryo, a prominence found between the lower end of the intestine, the future anus, and the allantois. [H.J—B. arrondi. See SPLENIUM.—B3. cotyloïdien. The prominent border of the cotyloid cavity, also the fibrous ti ue by which it is surmounted. [A, 385.]—I3. cut ané anal. A cutaneous fold partly or wholly surrounding the anu: [A, 385.]—B’s du corps calleux. The anterior and posterior borders of the corpus callosum, [A, 385.]—13. glénoïdien. The prominent border of the glenoid cavity, also the fibrous ti ue by which it is surmounted. [A, 385.]—B’s latéraux. The lateral walls of the fourth ventricle of the brain in the embryo. [I, 28; K. —B. muquenx de la lèvre. A prominence sometimes forme by the Jablal mucous membrane along the line of contact of the lips. [A, 385.|—B. périoplique [R. Bouley]. See B. (2d def.).—B. roulé. See Cornu Ammonis.