Crossword Genius

Key frame? (8)

Ross

I believe the answer is:

skeleton

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This might be a double definition.

'key' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I don't see?

'frame?' is the second definition.
(synonyms)

Can you help me to learn more?

(Other definitions for skeleton that I've seen before include "Minimum number required to keep things ticking over" , "Body-frame" , "Basic framework" , "Bare bones" , "set of bones?" .)

I've seen this clue in The Telegraph.
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