rudus

From Proto-Indo-European *Hrew- (“to tear up, dig up”). Cognate with rudis.

Alternatively related to raudus (“ore”), of substrate origin and/or ultimately from Sumerian 𒍏 (urud, “copper”). (Can this⁽⁺⁾ etymology be sourced?)

• (Classical Latin) IPA^(key): [ˈruː.dʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈruː.d̪us]

rūdus n (genitive rūderis); third declension

1. lump (especially of copper or bronze)
2. (roofing) tile
3. debris, rubble

Third-declension noun (neuter, imparisyllabic non-i-stem).

• rūderālis

• Italian: rudere
• ⇒ taxonomic name: Rhizopogon rudus, Stenodynerus rudus, Unio rudus, ⇒ ruda

• “rudus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “rudus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• "rudus", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• rudus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• Pokorny, Julius (1959) Indogermanisches etymologisches Wörterbuch [Indo-European Etymological Dictionary] (in German), volume 3, Bern, München: Francke Verlag, page 868

rudus

1. accusative masculine plural of ruds