Lewis Short
gĕrŭla (noun F) : gero
* She that bears or carries, Tert. Anim. 19 fin.; id. adv. Jud. 9 med.; App. M. 6, p. 181: navis gerula sacrorum,Sol. 1 fin.—A working bee, Plin. 11, 10, 10, § 24.
Charlton T. Lewis, Charles Short, A Latin Dictionary