I. | ̷ ̷ ̷ ̷| ̷ ̷ adjective
: being one more than 62 in number
sixty-three years
— see number table
II. pronoun, plural in construction
: 63 countable persons or things not specified but under consideration and being enumerated
sixty-three are here
sixty-three were found
III. noun
1. : three and 60 : three times 21 : seven times nine
2.
a. : 63 units or objects
a total of sixty-three
b. : a group or set of 63
3. : the numerable quantity symbolized by the arabic numerals 63
4. : the 63d in a set or series