Green’s Dictionary of Slang

eight adj.

SE in slang uses

In compounds

eight-pack (n.)

(N.Z. prison) a multi-occupancy cell [body-building eight-pack, well-defined absominal muscles (‘abs’)].

[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 65/1: eight-pack n. a cell designed to accommodate several people.
eight-pager (n.) (also sixteener)

a small, illustrated eight-page pornographic booklet in which popular cartoon characters (Popeye, Mickey Mouse, Blondie etc) are crudely pastiched in erotic scenarios far removed from their everyday antics.

Kinsey et al. Sexual Behav. Human Female I 62: [M]ost teen-age boys may have seen eight-pagers [Simes:DLSS].
[US]B. Rodgers Queens’ Vernacular 74: eight-pagers pornographic comic booklets. [Ibid.] 182: sixteener 16-paged comic book depicting the sex lives of cartoon greats.
[[US]G. Wolff Duke of Deception (1990) 117: The cards were kept in a cigar box with an eight-page Tijuana bible that spelled tit tut].
[US](con. 1930s–50s) A. Spiegelman in Adelman Tijuana Bibles 6/2: In other regions of America they were also known as Eight-Pagers, Two-by-Fours, Gray-Backs, Bluesies, Jo-Jo Books, Tillie-and-Mac Books, Jiggs-and-Maggie Books, or simply as Fuck Books.
[US]R. Price Lush Life 141: Every fuck book, textbook, eight-page comic and titty magazine .
eight-piece (n.) [piece n. (7a)]

US drugs an eighth of a kilo of crack cocaine.

[US]R. Price Clockers 103: Eight piece [...] Eighth of a kilo was probably what he meant.
eight rock (n.) [eightball n. (1a)]

(US black) a very dark-skinned person.

[US]Elman & Handy ‘Blue Gummed Blues’ 🎵 He’s an eight rock, an’ I’d shock my people if they knew That my man’s gums are blue.
[US]A.J. Pollock Und. Speaks 36/1: Eight rock, a negro.
[US]Z.N. Hurston ‘Story in Harlem Sl.’ in Novels and Stories (1995) 1008: Eight-rock: very black person.
eight wheeler (n.) [the wagon has eight wheels]

1. (US tramp) a person who robs trains whether en route or stationary.

[US]Irwin Amer. Tramp and Und. Sl. 69: Eight-Wheeler.-A box-car burglar, one who robs trains while in transit or while unguarded in a yard or station.
[US]Goldin et al. DAUL 65/2: Eight-wheeler. A thief who operates on railway freight cars.

2. a railway train.

[US]J. Rodgers ‘Gambling Bar Room Blues’ 🎵 I’ll grab that old eight-wheeler and make for the deep blue sea.