Nouns

(n)iron, Fe, atomic number 26a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood
(n)irona golf club that has a relatively narrow metal head
(n)iron, branding ironimplement used to brand live stock
(n)iron, smoothing ironhome appliance consisting of a flat metal base that is heated and used to smooth cloth

Verbs

(v)iron, iron out, presspress and smooth with a heated iron“press your shirts”, “she stood there ironing”

Adjectives

(s)cast-iron, ironextremely robust“an iron constitution”