The term 'Pound Piece' can be broken down into three crossword solutions: OUNCE (5 letters), POEM (4 letters), and CANTO (5 letters). OUNCE is a unit of measurement for weight, typically used to measure precious metals or gems. A POEM is a literary work consisting of words arranged in a specific order to express ideas or emotions. A canto is a division of a long POEM, usually consisting of several stanzas. Together, these three words form the term 'Pound Piece', which is a poetic work composed of several cantos.