The only free and comprehensive online etymological dictionary of the Spanish language
verso m. (Noun) "verse"
14th cent. From Latin versus "turned," but also "line of text" and "turn of the plow." The sense development was thus: in agriculture, a plowed line of soil was "turned" over, and Latin readers borrowed this word to refer to a line of prose or poetry. From vertere "to turn" (see verter).
Portuguese verso, Catalan ves, French vers, Italian verso, Romanian viers