ba's is

[L. and G.] Base, foundation, b. cra'nii, the base of the skull, b. pedun'culi [BNA], base of the peduncle, pedal portion or crusta of the CFus cerebri, the ventral portion of the pedunculus (crus) cerebri pa ing to the outer side of the optic thalamus and continuous with the internal capsule its fibers descend from the cortex.