llano | OEDoS

llano (Adjective) "flat" 11th cent. From Latin planus 'id.' From Proto-Italic *plāno- 'id.' From Proto-Indo-European *pleh₂-nó- "flattened." The origin of the surnames de Llano, Llan, Llana, Llanas and Llanos, and of Llanes, a town in Oviedo. Indo-European Romance Asturian llanu, Portuguese chão, Catalan pla, French plan, Italian: piano, Romanian plan Balto-Slavic Old Prussian plonis "threshing floor," Lithuanian plónas "thin," Latvian plãns 'id.' Corominas, J. & J. Pascual. Diccionario crítico etimológico castellano e híspanico. 6 vols. Madrid: Gredos. 1991-1997. de Vaan, M. Etymological Dictionary of Latin and Other Italic Languages. BRILL. 2014. Kloekhorst, A. Etymological Dictionary of the Hittite Inherited Lexicon. BRILL. 2014. Real Academia Española. Diccionario de la lengua española. Online. 23rd ed. Madrid: Espasa Calpa. 2014. http://www.rae.es/. Sihler, A. New Comparative Grammar of Greek and Latin. Oxford University Press. 2008. Tibón, G. Diccionario etimológico comparado de los apellidos españoles, hispanoamericanos y filipinos. Editorial Diana: Mexico. 1988.