forty-five

US: (fôr′tē fīv′)

Inflections of 'forty-five' (n):

45s

npl (For the record or the pistol)

45's

npl (For the record or the pistol)

WordReference Random House Learner's Dictionary of American English © 2025

ˈfor•ty-ˈfive,  n. [countable]

1. a.45-caliber handgun or its cartridge (often written as.45).
2. a 7-inch phonograph record played at 45 r.p.m. (often written as 45).

WordReference Random House Unabridged Dictionary of American English © 2025

for•ty-five  (fôr′tē fīv′), n. 

1. a cardinal number, 40 plus 5.
2. a symbol for this number, as 45 or XLV.
3. a set of this many persons or things.

adj. 

4. amounting to 45 in number.

45, 

1. Music n., pl. 45s, 45's. a seven-inch phonograph record played at 45 r.p.m., esp. a popular-music single.

• 1945–50

.45, n., pl. .45s,.45's. 

1. a pistol, revolver, or cartridge of.45-caliber, or having a diameter of.45 inch.

Also, forty-five. 

Collins Concise English Dictionary © HarperCollins Publishers::

forty-five noun

1. a gramophone record played at 45 revolutions per minute

Collins Concise English Dictionary © HarperCollins Publishers::

Forty-Five noun

1. the Forty-Five ⇒
   another name for Jacobite Rebellion2