The word "didst bit" is an archaic form of the past tense of the verb "to bite". It is spelled using IPA phonetic transcription as /dɪdst bɪt/. The use of "didst" as the past tense of "do" was common in early modern English, while "bit" still remains as the past tense of "bite". This spelling of the word is no longer used in modern English and can only be found in historical texts or literature.