thirty
nounThe cardinal number equal to 3 × 10.
nounA decade or the numbers from 30 to 39.
nounThe decade from 30 to 39 in a century.
nounAn indication of the end of a news story, usually written 30.
nounThe second point that is scored by one side in tennis.
nounIn printing and telegraphy, the last sheet, word, or line of copy or of a despatch.
Being thrice ten, three times ten, or twenty and ten.
nounThe number which consists of three times ten.
nounA symbol representing thirty units, as 30, XXX, or xxx.