Green’s Dictionary of Slang

cone n.

[resemblance]

1. (US) the head.

[US]Putnam’s Mag. Mar. 301: The combatants struck each other [...] upon the head, the nut, the cone [HDAS].
[UK]J.H. Carter Log of Commodore Rollingpin 188: Well, it wa’nt a fly that lit / On the side of his convex cone that day .

2. (Aus.) the nose.

[Aus]G.H. Lawson Dict. of Aus. Words And Terms [Internet] CONE – The nose.

3. (Aus. drugs) a metal cone with a hole in the centre, usu. made of aluminium or brass and used for smoking cannabis.

Tracks Mar. 5: I am sitting here smoking cones / Thinking of you Sydney clones.
[Aus]R.G. Barrett You Wouldn’t Be Dead for Quids (1989) 44: Feel like a cone? [...] You make the mull, I’ll pack ’em.
[Aus]L. Davies Candy 24: We pulled some cones and I really could have done with a big sleep.
[Aus]D. McDonald Luck in the Greater West (2008) 81: The cone wasn’t fully smoked, but he was too stoned already.

4. (US drugs) a conical cannabis cigarette, which is tapered by rolling with two or more papers glued at an angle.

[US]‘Jennifer Blowdryer’ Modern English 79: fat joints (n): Spliff; Cone Joint.
[Aus]R.G. Barrett Real Thing 126: He’d mulled up enough dope for about four little cones.
[UK]Indep. Rev. 19 Aug. 5: The basic social event [...] of smoking-chuffing-drawing a few joints-spliffs-cones is largely taken for granted.
[US]A. Mansbach ‘Crown Heist’ in Brooklyn Noir 124: Puffing one of those big-ass Bob Marley cone spliffs.
[UK]J. Fagan Panopticon (2013) 36: Two immaculate cones stashed there [...] one’s pure grass.

SE in slang uses

In phrases

give cone (v.) [the image of licking an ice-cream cone]

(US teen) to fellate.

‘Valley Girls’ on Paranoiafanzine [Internet] I know you’re supposed to be really into sex and stuff, like it’s really cool to go, ‘God, I’m so horny!’, but when you think about it, it’s just gross! I mean, even, ok, like, giving cone, grody to the max!