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abdominal nerve plexus
-
drumhead
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novice
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propenonitrile
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support column
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sheik
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absolute magnitude
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pope
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abbreviatory
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disposal
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conundrum
conundrum /kəˈnʌndrəm/
noun
-
A difficult problem
(
brain-teaser
, conundrum
, enigma
, riddle
)
a difficult problem
