casquillo

== Spanish == === Etymology === From casco + -illo. === Pronunciation === Syllabification: cas‧qui‧llo === Noun === casquillo m (plural casquillos) ferrule, tip shell (of bullet) === Further reading === “casquillo”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025