Green’s Dictionary of Slang

word, the n.

(advance) information.

[UK]Swell’s Night Guide 59: This ere Brighton’s a slashing walk of trade. Right as a jemmy! – mizzle’s the word.
[US]Ade Fables in Sl. (1902) 168: The Word went around that the imported Pug was too Fat and had bad Wind.
[US]A.H. Lewis Confessions of a Detective 80: The ‘word’ was sent round. True, every man jack of us, who wore a police badge, knew the bill was a ‘strike,’ and devised to bleed us.
[US]F. Packard White Moll 172: Everything is off for a few days? That’s the word I got a little while ago.
[US]D. Dodge Bullets For The Bridegroom (1953) 25: He was waiting for the other guy to give him the word.
[UK]G. Kersh Fowlers End (2001) 235: Somebody ’ad dropped the word, anyway, that there was a dynamite outrage being planned on the premises.
[US]‘Red’ Rudensky Gonif 23: I got the word out to a pal on the outside.
[US]R. Campbell Alice in La-La Land (1999) 42: ‘The word is he also punches out whores.’ ‘Half that word is bullshit and the other half blue smoke most of the time.’.
[WI]M. Montague Dread Culture 160: Word is somebody high up [...] wants to put it to the new superintendent and stir up some shit while he’s at it.
[US](con. 1964–8) J. Ellroy Cold Six Thousand 17: Pete got the word. They did biz with Fidel.

In phrases

put the word out on (v.)

1. (US Und.) to have marked for arrest or murder; thus the word is out for/on...

[US](con. 1918) J.W. Thomason Red Pants 168: The word’s been out for you since last night. The Old Man wants to talk to you.
[US]M. Braly On the Yard (2002) 171: I think the word’s out on you, and I think you know it.
J. Durden-Smith Who Killed George Jackson 163: When you go back to jail, we’re going to put the word out on you.

2. (US) to malign in public.

B. Hanson Life with Heroin 117: Mr. Ben from Philadelphia said that disagreements between users can cause trouble, and angry heroin users can: ‘get mad, and put the word out on you.’.
J. Brown Second Story Theatre 165: Instead of reporting him to the cops, the executive producer on the show put the word out on him around the studios.
J. Walls Glass Castle 32: Dad said one of the dealers had figured out that he had a system and had put the word out on him. He told us it was time to do the skedaddle.