Green’s Dictionary of Slang

(Aus./US) a prison.

1896		Buffalo Eve. News (NY) 28 Sept. 41/3: George Farret and Mike Dunn were arrested [and] locked up in the freeezer.
1929–31		Kernôt unpub. gloss. in DU.
1941		Baker Popular Dict. Aus. Sl.
1953		R. Chandler Long Good-Bye 67: You didn’t spend three days in the freezer just because you’re a sweetheart. You got paid off.