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bolthead

[bohlt-hed] /ˈboʊltˌhɛd/
noun
1.
the head of a bolt.
2.
Chemistry. (formerly) a matrass.
Origin of bolthead
late Middle English
1425-1475
1425-75; late Middle English; see bolt1, head
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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14
15
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