Green’s Dictionary of Slang

mattress n.

1. (US) a beard.

[US]G. Milburn ‘Who Said I Was a Bum?’ in Hobo’s Hornbook 143: I haven’t shaved for nearly a year, [...] A cop gave me a chase. / I thought I heard him holler, / ‘Take that mattress off yer face!’.

2. (US) pubic hair.

[US]‘Justinian’ Americana Sexualis 28: Mattress. n. The pubic hair.

3. (US) the face.

[US]Monteleone Criminal Sl. (rev. edn).

4. (Aus./US, also mattrass) a woman as a sexual partner; a girlfriend, usu. derog.; also attrib. [the man ‘lies’ on her].

[US]W. White ‘Wayne University Sl.’ AS XXX:4 302: mattress mary [...] n. Woman of loose morals.
[UK](con. 1940s) G. Morrill Dark Sea Running 43: Ray was cocky good-looking guy. In every port we hit he was the big mattress man around town.
G.L. Coon Short End 218: Bertha was just one great big warm mattress.
J. Roe Same Old Grind 172: You old flabgut, you old mat[t]ress, you lard-ass old swing-tit, you blubber-bellied old bag.
[UK]P. Baker Blood Posse 64: Nadine’s the mattress for the whole football team.
[WI]Francis-Jackson Official Dancehall Dict. 33: Mattrass someone, usually female who sleeps around.

5. (US Und.) a war between US Mafia families [backform. f. go to the mattresses ].

[UK] (ref. to 1931) Chillicothe (MO) Constitution-Trib. 2 Oct. 1/2: Valachi said the ‘Boss of Bosses,’ Salvatore Maranzano told him there was going to be another gang war, a ‘mattress.’.

SE in slang uses

In compounds

mattressback (n.)

1. (Aus./US) a sexually promiscuous woman.

J. Barth Sot-Weed Factor (1965) 461: Whore! [...] ‘Poupinette!’ ‘Mattressback!’ ‘Brimballeuse!’.
[US]C. Loken Come Monday Morning 128: Even if he got drunk enough endin’ up givin’ ole mattressback Carol a fast jab or two.
[Aus]Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Mattress back. 1. A woman, particularly one of easy virtue.
[Aus]B. Moore Lex. of Cadet Lang. 227: usage: ‘I hear the new mess maggot is a bit of a mattress-back’.

2. (Aus. prison) a prisoner who spends a lot of time in their cell.

[Aus]Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Mattress back. 2. A prisoner who spends a lot of time in his cell.
mattress jig (n.)

(US) sexual intercourse.

[Ire]Joyce Ulysses 404: If she who seduced me had left but the name. What do you want for ninepence. Machree, Macruiskeen. Smutty Moll for a mattress jig. And a pull alltogether. Ex!
mattress job (n.) [job n.2 (2)]

a beating by police to persuade a person to make a confession. The victim is placed under a mattress and then jumped and stamped upon, so no visible marks are left on the victim’s body.

[UK]N. ‘Razor’ Smith A Few Kind Words and a Loaded Gun 48: At the police station I was given a ‘mattress job’.
mattress-muncher (n.) [his response to anal intercourse]

(orig. Aus.) a passive homosexual man; thus much the mattress v.

[Aus]B. Humphries Traveller’s Tool 21: Any bloke who […] uses the adjectives ‘bizarre’ and ‘stunning’ in the same sentence munches the mattress.
[Aus]B. Humphries Complete Barry McKenzie v: The Australian Cultural Scene, which is, let’s face it, largely run by pillow biters and raving mattress munchers.
I-94Bar 3:11 🌐 Yep, when you hear a poof joke, you might bite your tongue in these politically correct days, but these guys bite their pillows. They’re mattress munchers – and proud of it. Turd burglars. Drillers for Vegimite.
mattress polo (n.)

(US) sexual intercourse.

[US]J.T. Farrell Gas-House McGinty 221: We’re all professional mattress polo players, Casy replied; they leered and snickered.

In phrases

go to the mattresses (v.) (also hit the mattresses) [the practice of sleeping on mattresses in one’s hideout, rather than in one’s bed at home. Orig. a US Mafia usage, the phr. was widely popularized by the success of Mario Puzo’s book The Godfather (1969) and the films that followed]

(orig. US Und.) to hide, to take refuge, esp. when under siege from another gang.

[US]M. Puzo Godfather 104: Their job today was to find an apartment in case the Family decided to ‘go to the mattresses’.
[US]R. Daley Target Blue 205: The Gallo mob was getting thinned out so fast that the survivors and their lion had taken to the mattresses.
[US]J. Wambaugh Glitter Dome (1982) 1891: And all we’re trying to do is stop the button men from hitting the mattresses.
[US]G. Pelecanos Drama City 77: Lee had fathered a couple of children, what they called beef babies, [...] when he’d gone to the mattresses, Corleone-style.
[US]‘Dutch’ ? (Pronounced Que) [ebook] he the fuck we ’posed to go to the mattresses wit’ these Jersey nigguhs and the feds on us hard?
[US]T. Pluck Boy from County Hell 219: ‘This [gang] war’s in the papers. [...] I suggest you go to the mattresses’.
[UK]J. Meades Empty Wigs (t/s) 62: I needed a bandage, a suture, something [...] Certainly a place to hide. I had to go to the mattresses.
ride the mattress train (v.)

(US) to sleep.

L. Fritz In Nine Kinds of Pain [ebook] [H]e probably would have ridden the mattress train to Sadville for the next few days, this time with stops at Dumpsburg and Loser City.
work on mattresses (v.)

(US) to work as a (brothel) prostitute.

[US]Life in Boston & N.Y. (Boston, MA) 14 Apr. n.p.: Where did that white bonnet and fancy cloak come from? Does she work on mattresses?