Lewis Short
umbrācŭlum (noun N) : umbra (
* Any thing that furnishes shade).
* Lit., a shady place, bower, arbor, Varr. R. R. 1, 51, 2; Cic. Fragm. ap. Macr. S. 6, 4; Verg. E. 9, 42.
* Transf., a school: in solem et pulverem, ut e Theophrasti doctissimi hominis umbraculis,Cic. Brut. 9, 37: ex umbraculis eruditorum in solem atque in pulverem,id. Leg. 3, 6, 14.
* A sunshade, parasol, umbrella, Ov. F. 2, 311; id. A. A. 2, 209; Mart. 14, 28, 1; Tib. 2, 5, 97; Amm. 28, 4; App. Mag. p. 315, 16.
Charlton T. Lewis, Charles Short, A Latin Dictionary