upthrow

verb, noun — 4 senses

verb

Etymology From Middle English upthrowen, equivalent to up- + throw.

Archaic, Poetic To throw or cast upwards.

For fifty tons of water were upthrown / By them per hour [...].1819, Lord Byron, Don Juan, II.29:

Geography, Geology, Natural sciences To throw up (a mass of material) from below, causing a fault.

Geography, Geology, Natural sciences Of a mass of material To be thrown up from below, causing a fault.

noun

Etymology From Middle English upthrowen, equivalent to up- + throw.

Geography, Geology, Natural sciences A fault in which a mass of material has been thrown up from below.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.