The word "girru" is spelled with the phonetic transcription /gɪr.u/. This represents the sounds heard in the word, starting with a hard "g" sound followed by a short "i" sound, a rolled "r" sound, and ending with the short "u" vowel. The spelling of "girru" may appear unusual to some, but it follows the standard English phonetic rules. It is important to understand phonetic transcriptions in order to accurately pronounce and spell words.