Green’s Dictionary of Slang

1. circumcised.

1856		Life in Boston & N.Y. (Boston, MA) 23 Aug. n.p.: The Jew, Ben O—, was expelled [...] on account of being a cut end.
1972		B. Rodgers Queens’ Vernacular.
1979		‘Abdul Abul Bul Amir’ in Bold (1979) 1: You’re not only a Jew, but you’re cut on the skew / Mister Ivan Skavinsky Skavar!
1988		(con. 1940s) C. Bram Hold Tight (1990) 15: The man was cut, so there was a round head with eaves and a smooth stalk to tongue.
1997–2002		Alt. Eng. Dict. 🌐 cut (n) circumcised, having the foreskin of the penis, or the clitoris removed.
2003		K. Cage Gayle.
2012		G. Pelecanos (con. 1972) What It Was 76: Tony Curtis is a Jew [...] Means Janet [Leigh] likes her salami cut.

2. having had a vasectomy.

1970

in P.R. Runkel Law Unto Themselves 52: Q. Weren’t you afraid of impregnating her? A. No, I’m cut, sir. I was cut about a year ago.

3. (US, also cut up) of a person, with well-defined or well-developed muscles.

1989		P. Munro Sl. U. 65: cut/cut up having well defined muscles.
1994		T. Willocks Green River Rising 61: He was [...] muscled, though not cut like those faggot body-builders.
1997		(con. 1970s) G. Pelecanos King Suckerman (1998) 29: Hard and cut [...] like a sculptor had made him.
2004		J. Ellroy ‘Hollywood Fuck Pad’ in Destination: Morgue! (2004) 212: My mini-gut flared and flattened. LAPD likes lean lines and cut contours.
2007		D. McDonald Luck in the Greater West (2008) 131: Abdullah finished his third set of reps [...] Gettin’ cut up.
2007		L. Redhead Cherry Pie [ebook] His triceps looked cut, as usual.
2012		J. Díaz This Is How You Lose Her 33: Rafa was still boxing then and he was cut up like crazy.