1. A small genu, or angular knee-like structure. It is often used in anatomical nomenclature to designate a sharp knee-like bend in a small structure or organ. For example, in the facial canal, the genicular ganglion is situated on the geniculum of the facial nerve, the point where the nerve changes its direction. (wikipedia.org)
2. Knee. (wiktionary.org)
3. Little knot. (wiktionary.org)
Word origin: From Latin geniculatus, from geniculum “little knee, knot on the stalk of a plant,” diminutive of genu “knee”