gĕnĭcŭlus: i, m. dim. genu, a little knee, transf., in arch.,I an angular bend where two pipes are joined together, a knee, Vitr. 8, 7.
gĕnĭcŭlus, ī, m., dim. de genu, coude, objet coudé : Vitr. Arch. 8, 6, 6.