Definitions
1.nounAn exciting or extraordinary scene, exhibition, performance etc."The horse race was a thrilling spectacle."
2.nounAn embarrassing or unedifying scene or situation."He made a spectacle out of himself."
3.noun(usually in the plural) An optical instrument consisting of two lenses set in a light frame, and worn to assist sight, to obviate some defect in the organs of vision, or to shield the eyes from bright light.
4.nounAn aid to the intellectual sight.
5.nounA spyglass; a looking-glass.
6.nounThe brille of a snake.
7.nounA 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.