I. | ̷ ̷ ̷ ̷| ̷ ̷ adjective
: being one more than 44 in number
forty-five years
— see number table
II. pronoun, plural in construction
: 45 countable persons or things not specified but under consideration and being enumerated
forty-five are here
forty-five were found
III. noun
1. : five and 40 : five times nine : nine fives : three fifteens
2.
a. : 45 units or objects
a total of forty-five
b. : a group or set of 45
3. : the numerable quantity symbolized by the arabic numerals 45
4. : the 45th in a set or series ; especially : an article of clothing of the 45th size
wears a forty-five
5. : a 45 caliber pistol — usually written .45
6. : a variation of spoil five in which points are scored on every deal and 45 points are game
7. : a microgroove phonograph record designed to be played at 45 revolutions per minute — usually written 45