The spelling of the phrase "most brass bound" can be explained using IPA phonetic transcription. /moʊst bræs baʊnd/ The first word, "most," is pronounced with a long "o" sound and a "st" sound at the end. "Brass" is pronounced with a short "a" sound and a double "s" at the end. "Bound" is pronounced with a short "u" sound and a "nd" sound at the end. When put together, the phrase describes something that is heavily decorated with brass.