safety lens safe·ty lens (sāf’tē)
A lens that meets government specifications for impact resistance.
noun 1. an auxiliary lintel concealed behind a visible lintel, arch, etc.
noun 1. a lock designed to prevent picking. 2. safety (def 4).
noun, Football. 1. safety (def 6c).
noun 1. a match designed to ignite only when rubbed on a specially prepared surface. safety match noun 1. a match that will light only when struck against a specially prepared surface