upthrow

1 of 2

verb

up·​throw ˈəp-ˌthrō 

upthrew ˈəp-ˌthrü  ; upthrown ˈəp-ˌthrōn  ; upthrowing

transitive verb

: to throw or thrust upward

upthrow

2 of 2

noun

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

Word History

First Known Use

Verb

14th century, in the meaning defined above

Noun

1807, in the meaning defined above