The spelling of the word "Eiking" can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. The word is pronounced as [ˈaɪkɪŋ], with the stress on the first syllable. The letter "E" represents the vowel sound /aɪ/, which is pronounced as "aye". The letter "k" represents the consonant sound /k/, which is pronounced as "kay". Finally, the suffix "-ing" represents the present participle of the verb "to eke", which means to augment or supplement something. Overall, "Eiking" refers to the act of adding to or making something greater.