Definition of ironhead in US English:

ironhead

(also ironheads)

noun

  • 1The goldeneye (duck), Bucephala clangula, of which the male has a mainly greenish-black head and the female a brown head. Now rare.

  • 2The wood stork, Mycteria americana.

Origin

Mid 19th century (in an earlier sense). In some forms from iron + head.

Pronunciation

ironhead

/ˈʌɪənhɛd/