Similar words
hierro
fierro and hierro are close synonyms for "iron," a regional variant; fierro is used colloquially in Latin America.
Similar in other languages
Portuguese
ferro
ferro is the Portuguese word for the same thing — both mean "iron."
Practice
1 What does fierro mean?
iron
2 Fill the gap: Es un barra de ___.
Full sentence: Es un barra de fierro. (It's an iron bar.)
3 Which fingerprint chart matches fierro?
fierro: neutral register, academic frequency, general domain, neutral connotation.