Blade apple is not a commonly used term in English, but it can be spelled in the following way: /bleɪd ˈæpəl/. The first syllable, "blade," is pronounced with a long "a" sound followed by a "d" consonant sound. The second syllable, "apple," is pronounced with a short "a" sound followed by a "p" and "l" consonant sound. This spelling suggests that the word refers to a type of apple that is shaped like a blade or has some other association with blades.