The spelling of the word "hewins" can be explained using the International Phonetic Alphabet (IPA). The first sound is /hju/, which is a combination of the /h/ sound followed by the diphthong /ju/, similar to the sound in "use". The next sound is /ɪnz/, which represents the plural ending '-s' and the vowel sound /ɪ/, like the 'i' in "sit". Overall, the pronunciation of "hewins" is /ˈhjuː.ɪnz/, with the stress on the first syllable.