The spelling of the word "Hordock" can be explained using the International Phonetic Alphabet (IPA). The initial "h" is pronounced with an aspiration, represented by the symbol [h]. The following "or" sound can be transcribed as [ɔr], with an open back rounded vowel followed by an r sound. Finally, the "dock" ending is pronounced with a consonant cluster, represented by [dɑk]. Therefore, the correct spelling of the word "Hordock" is [hɔr.dɑk] in IPA transcription.