noun, masculine/θeˈriʝo/plural: cerrillos
diminutive of cerro; common thatching grass, Hyparrhenia hirta.
Etymology tree Spanish cerro Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Latin -lus Latin -ellus Old Spanish -iello Spanish -illo Spanish cerrillo From cerro + -illo.