upthrow

verb
up·throw | \ˈəp-ˌthrō \
upthrew\ˈəp-ˌthrü \; upthrown\ˈəp-ˌthrōn \; upthrowing

Definition of upthrow 

(Entry 1 of 2)

transitive verb

: to throw or thrust upward

upthrow

noun

Definition of upthrow (Entry 2 of 2)

: an upward displacement (as of a rock stratum) : upheaval, upthrust

First Known Use of upthrow

Verb

14th century, in the meaning defined above

Noun

1807, in the meaning defined above

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The first known use of upthrow was in the 14th century

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