Green’s Dictionary of Slang

1. (mainly UK upper/upper-middle-class juv., also wrinkled dick) an old person, the old.

1922		Appleton Post-Crescent (WI) 15 May 9/1: Flapper Dictionary wrinkle – The mother of a Flapper.
1974		D. Ireland Burn 66: Let’s go. Leave these wrinklies snore their heads off.
1982		Barr & York Sloane Ranger Hbk 159: wrinkly n. Middle-aged Sloane — between 40 and 50.
1989		J. Morton Lowspeak.
1993		D. Jarman diary 7 Jan. Smiling in Slow Motion (2000) 288: He was described as [...] a ‘Peter Pan’, though I remember him as a wrinkly.
2000		T. Blacker Kill Your Darlings 69: What did we expect, we wrinklies, we groans?
2000		Guardian 1 Feb. 7: Rock wrinklies dominated the category.
2003		McGill Reed Dict. of N.Z. Sl. 235: wrinkled dick Old man.
2017		T. Spicer Good Girl Stripped Bare 286: Who Wants to See Wrinklies on the Tele? I hear you ask.
2023		R. Milward Man-Eating Typewriter 241: ‘You’re nanti frightened of that jumped-up wrinkly, are you?’.

2. attrib. use of sense 1.

1999		Indep. 5 June 11: Golden oldies they may be, wrinkly wonders they certainly are.
1998		D. Jenkins Rude Behavior 42: We were in a ‘wrinkle bar.’ Tommy Earl coined the name. He had wisely observed the over-sixty trend setting in on society.

3. (Aus. prison) an old prisoner.

1984		B. Ellem Doing Time 200: wrinkley [sic]: an old prisoner.
1990		Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Wrinkly. An old prisoner.