Lewis Short
ăpertūra (noun F) : aperio (only post Aug.).
* An opening (abstr.), Vitr. 4, 6 fin.; Dig. 28, 5, 3.
* An opening (concr.), aperture, a hole, Vitr. 5, 5; so id. 10, 9: Vulg. Amos, 4, 3; 9, 11.
Charlton T. Lewis, Charles Short, A Latin Dictionary