cauliculus

from The Century Dictionary.

• noun In insect anatomy, the larger of the two elements of the double stalk of the so-called mushroom bodies in the brain of certain insects. See mushroom *body.
• noun In architecture, one of the lesser branches or leaves in the typical Corinthian capital, springing from the caules or main stalks which support the volutes.
• noun In botany, same as caulicle.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Arch.) In the Corinthian capital, one of the eight stalks rising out of the lower leafage and terminating in leaves which seem to support the volutes. See illust. of Corinthian order, under Corinthian.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun architecture In the Corinthian capital, one of the eight stalks rising out of the lower leafage and terminating in leaves which seem to support the volutes.