1. thirty - Noun
2. thirty - Adjective
3. thirty - Adjective Satellite
Being three times ten; consisting of one more than twenty-nine; twenty and ten; as, the month of June consists of thirty days.
The sum of three tens, or twenty and ten; thirty units or objects.
A symbol expressing thirty, as 30, or XXX.
Source: Webster's dictionaryBring home a wife to your house when you are of the right age, while you are not far short of thirty years nor much above; this is the right age for marriage. Hesiod
All that I know I learned after I was thirty. Georges Clemenceau
The great question that has never been answered, and which I have not yet been able to answer, despite my thirty years of research into the feminine soul, is 'What does a woman want?' Sigmund Freud
The tongue is safe; even among thirty teeth. Hindi Proverb
A man may die old at thirty and young at eighty. English Proverb
He that at twenty is not, at thirty knows not, and at forty has not, will never be, nor ever know, nor ever have. Italian Proverb