The spelling of the word "Pinnish mark" may seem confusing, but it is actually quite simple. The first syllable, "pin", is pronounced with a long "i" sound, like "pine". The second syllable, "nish", is pronounced with a short "i" sound, like "in". The final syllable, "mark", is pronounced with a clear "r" sound and a short "a" sound, like "mar-k". Altogether, the word is pronounced /ˈpaɪnɪʃ ˌmɑrk/ and refers to a mark or spot on a horse's coat.