The spelling of the word "dost thing" is a combination of archaic and modern English. "Dost" is an obsolete form of the second person singular present tense of "do", meaning "you do". "Thing" is a common modern English word referring to an object or a matter. The IPA phonetic transcription for "dost thing" is /dʌst θɪŋ/, indicating the pronunciation of the "o" in "dost" as the short "u" sound and the "th" in "thing" as the voiceless dental fricative.
There seems to be no established or commonly used phrase or term as "dost thing" in the English language. "Dost" is an archaic second person singular form of the verb "do," which was used in Early Modern English and Shakespearean English. It is typically associated with the second person pronoun "thou," forming the construction "thou dost." However, "dost thing" does not have a clear meaning or reference.
"Dost thing" may be a misinterpretation or a modification of other terms or phrases. Without any context or specific definition, it is not possible to provide a concise, accurate, and meaningful dictionary definition for this term. It is important to note that language is constantly evolving, and new words or phrases may enter into common usage over time. Therefore, it is possible that "dost thing" may have emerged as a new phrase or term in a particular context or community, wherein it would carry a specific meaning understood by the people using it.