The word "Runnion" is a rare term that describes a small piece of wood or metal used to brace or support a structure. Its spelling may seem odd, but it follows a consistent pattern in English phonetics. The first syllable "Run" is pronounced with the short "u" sound, as in "fun." The second syllable "nion" is pronounced with a long "i" sound, as in "lion." Together, the word is pronounced as "RUHN-yun" with the emphasis on the first syllable.