tenebrarius

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

tĕnē̆brārĭus, a, um, adj. [tenebrae],

of or belonging to darkness : homo, a fellow that shuns the light , a giddy fellow , or an obscure person , Vop. Firm. 2 (al. tenebrarum).