The spelling of the word "thiry" is incorrect. The correct spelling is "thirty," pronounced /ˈθɜːrti/. The first sound, /θ/, is called "theta" and is produced by placing the tip of the tongue between the top and bottom front teeth and blowing air. The vowel sound, /ɜː/, is pronounced by rounding the lips slightly and making a mid-central tongue position. Finally, the consonant sound, /t/, is made by stopping the airflow with the tongue and releasing it with a small puff of air.
There is no word in the English language spelled exactly as "thiry." It is possible that this word was misspelled, or it may be a slang term with a different variation. However, if we assume that "thiry" is intended to be "thirty," the definition will be provided accordingly.
Thirty is a cardinal number that represents the quantity or value of 30. It falls between twenty-nine and thirty-one in the numeration system. It is derived from the Old English word "þritig" or "thrittig." The number "30" is composed of two digits: three and zero. It holds significance in various contexts, including time, quantity, or age.
In terms of time, thirty refers to half an hour or 30 minutes. For example, "I'll meet you in thirty minutes." When it comes to quantity, it denotes a count of thirty items, units, or individuals. An illustration of this usage could be: "There are thirty students in the classroom."
Additionally, thirty can be used to describe a person's age, particularly when they have lived for thirty years. For instance, "She celebrated her thirtieth birthday last week."
In summary, "thirty" is a numerical quantity that represents the value of 30 in various aspects of time, quantity, or age.
There seems to be a mistake in the word "thiry" you provided. It is most likely a typo or an incorrect spelling.