forty-five

num, noun — 2 senses

num

US /ˌfɔɹtiˈfaɪv/ · UK /ˌfɔːtiˈfaɪv/

Cardinal number after forty-four and before forty-six.

noun

Engineering, Firearms, Government, Military, Natural sciences, Physical sciences, Politics, Tools, War, Weaponry A .45-caliber firearm.

The robber brandished a forty-five at the cashier to make her empty the till for him.
The phoenix he helped create Out of control boy without a dad Shot the gun that startled my life While I drove him with a forty-five1998, “Soil”, in Serj Tankian (lyrics), Daron Malakian (music), System of a Down, performed by System of a Down, Track 7:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.