The spelling of the word "shotlocker" can be explained using IPA phonetic transcription. The first syllable "shot" is pronounced as /ʃɑt/ with the "sh" sound and a short "o" sound. The second syllable "lock" is pronounced as /lɑk/ with a long "o" sound. The final syllable "er" is pronounced as /ər/ with a schwa sound. Overall, "shotlocker" is spelled using a combination of three syllables with specific phonetic sounds to create the word.