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lardo m. (Noun) "animal fat;" "lard"
From Latin lardum "lard," a syncope of earlier laridum. Probably borrowed from Ancient Greek λαρινός (larinos) "fat" - though the change from -n- in Greek to -d- is odd - which was derived from λαρός (laros) "pleasing," "sweet." Of unknown origin. Perhaps borrowed from another language.
The feminine larda, meaning "animal fat" but not "lard," is derived from lardo.