I. | ̷ ̷ ̷ ̷| ̷ ̷ adjective
: being one more than 65 in number
sixty-six years
— see number table
II. pronoun, plural in construction
: 66 countable persons or things not specified but under consideration and being enumerated
sixty-six are here
sixty-six were found
III. noun
1. : six and 60 : three times 22 : six times 11
2.
a. : 66 units or objects
a total of sixty-six
b. : a group or set of 66
3. : the numeral quantity symbolized by the arabic numerals 66
4. : the 66th in a set or series
5. : a two-hand card game played with a 24-card pack in which the object is to score 66 of a possible 130 points