ădumbrātĭo — Lewis & Short
ădumbrātĭo, ōnis, f.id.,
I a sketch in shadow, à la silhouette, a perspective sketch or draft (cf. adumbro).
I Lit.:
scenographia est frontis et laterum abscedentium adumbratio,Vitr. 1, 2.—
II Fig., a sketch, outline: nulla est laus oratoris, cujus in nostris orationibus non sit aliqua, si non perfectio, at conatus tamen atque adumbratio, * Cic. Or. 29.—Hence,
B A false show, the semblance of a thing, pretence:
insidiosa beneficii adumbratio,Val. Max. 7, 3, 8; cf. Cic. Off. 1, 14, 44.