The practice of keeping secrets.
protection from observation or surveillance.
The condition of being hidden or concealed.
An embarrassing or unedifying scene or situation.
A frame with different coloured lenses on a semaphore signal through which light from a lamp shines at night, often a part of the signal arm.
The brille of a snake.
An exciting or extraordinary scene, exhibition, performance etc.
An optical instrument consisting of two lenses set in a light frame, worn to assist sight, or to protect the eyes from bright light.