I. | ̷ ̷ ̷ ̷| ̷ ̷ adjective
: being one more than 53 in number
fifty-four years
— see number table
II. pronoun, plural in construction
: 54 countable persons or things not specified but under consideration and being enumerated
fifty-four are here
fifty-four were found
III. noun
1. : four and 50 : three times 18 : six times nine
2.
a. : 54 units or objects
a total of fifty-four
b. : a group or set of 54
3. : the numerable quantity symbolized by the arabic numerals 54
4. : the 54th in a set or series