(backdrops)
1.
A backdrop is a large piece of cloth, often with scenery painted on it, that is hung at the back of a stage while a play is being performed.
= backcloth
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2.
The backdrop to an object or a scene is what you see behind it.
Leeds Castle will provide a dramatic backdrop to a fireworks display next Saturday...
= background
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3.
The backdrop to an event is the general situation in which it happens.
The election will take place against a backdrop of increasing instability.
= background
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