noun, masculine/toˈpiʝo/plural: topillos
diminutive of topo; vole (any of various rodents in the subfamily Arvicolinae)
Etymology tree Spanish topo Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Latin -lus Latin -ellus Old Spanish -iello Spanish -illo Spanish topillo From topo + -illo.