• Webster's Revised Unabridged Dictionary
    • n Falx (Anat) A curved fold or process of the dura mater or the peritoneum; esp., one of the partitionlike folds of the dura mater which extend into the great fissures of the brain.
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Century Dictionary and Cyclopedia
    • n falx A metal implement, of a form suitable for a pruning-hook, sometimes found among ancient remains.
    • n falx In anatomy, something which is falcate or falciform; specifically, a fold of the dura mater separating parts of the brain. See falx cerebri and falx cerebelli, below.
    • n falx In herpetology, one of the poison-fangs of a serpent: so called from its shape: generally used in the plural.
    • n falx In entomology, one of the jointed appendages under the front of a spider's cephalothorax, used to seize and kill its prey. It consists of two parts, the base and the pointed and curved fang, which folds down in a groove of the base. A duct runs through both joints, opening at the tip of the fang, and is connected with a poison-gland in the cephalothorax. The falces are also called cheliceræ and, incorrectly, mandibles. In some species the two organs are united. The term is extended to the similar or corresponding mouth-parts of other arachnidans.
    • n falx In echinoderms, a rotula; one of the mouth-parts of a sea-urchin. See cut under Echinoidea.
    • n falx A certain grip or trick in wrestling.
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Chambers's Twentieth Century Dictionary
    • n Falx falks a sickle-shaped part or process, as of the dura mater of the skull: a chelicera: a poison-fang of a snake: a rotula of a sea-urchin
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Webster's Revised Unabridged Dictionary
L., a sickle
Chambers's Twentieth Century Dictionary
L., a sickle.


In literature:

The dura-matral falx; A*, its attachment to the tentorium.
"Surgical Anatomy" by Joseph Maclise
What is the use of the falx cerebri?
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
Men hjara falxe redne and hjara tamlase hachfarenhed heth ra vppen dwalwei brocht.
"The Oera Linda Book" by Anonymous
In the falx is a poison-sac from which poison flows through the hollow fang and out at its tip.
"Elementary Zoology, Second Edition" by Vernon L. Kellogg