falx

[Lat.= a sickle, a scythe.] Anat .: Anything shaped like a sickle or scythe, Specially, the falx cerebri , which dips down between the two hemispheres of the cerebrum nearly to the corpus callosum, and the falx cerebelli , which descends from the dura mater into the longitudinal fi ure between the two hemispheres of the cerebrum. (Quain.)