Correct spelling for the English word "tonguage" is [tˈʌŋɡwɪd͡ʒ], [tˈʌŋɡwɪdʒ], [t_ˈʌ_ŋ_ɡ_w_ɪ_dʒ] (IPA phonetic alphabet).
I apologize, but it seems that "tonguage" is not a recognized word in the English language. It could be a typographical error or a less common term. Without further context or information, it is difficult to provide a dictionary definition for a word that does not exist. If you have any alternate spellings or additional details, I would be happy to assist you further.