Green’s Dictionary of Slang

1. (orig. US) a talkative, loquacious person, thus a liar; thus windjamming, loquacity.

1893		Columbus Dispatch 7 Aug. n.p.: The few workers present are effectually playing the part of windjammers and many rumors are afloat [DA].
1900		El Paso Dly Herald (TX) 15 Feb. n.p.: ‘Jim Crow’ Miners Doing Too Much ‘Wind-Jamming’.
1903		Ade People You Know 46: The Committee wanted a Wind-Jammer.
1904		Sun. Times (Perth) 14 Feb. 5/1: ‘Would have given it to a barrel-organ man to save another half-a-dollar,’ said an indignant windjammer to me in disgust.
1912		R.W. Brown ‘Word-List From Western Indiana’ in DN III:viii 593: wind-jammer, n. A braggart. ‘He’s the greatest wind-jammer in town.’.
1917		Wkly Tribune & Cape Co. Herald (Cape Girardeau, MO) 24 Apr. 6/6: I’d rather be a wind-jammer than the President of the United States.
1922		M.E. Smith Adventures of a Boomer Op. 60: Honest, Hiram, I got so tired listening to that Wind-jammer that I wanted to call a cop.
1933		J. Conroy Disinherited 140: Don’t you put no stock in what that windjammer tells you. He jist talks to hear his head rattle.
1935		C.E. Mulford ‘Don’t Frame a Red Head’ in Western Fiction Monthly Aug. n.p.: Don’t take no harm in my fool wind-jammin’, stranger. It’s in th’ game.
1949		Monteleone Criminal Sl. (rev. edn).
1953		Randolph & Wilson Down in the Holler 299: wind-jammer: n. A teller of tall tales, a windy-spinner, a blanket-stretcher.
1965		(con. 1920s) Carmichael & Longstreet Sometimes I Wonder 157: Night clubs are fouled full of wind-jammers.

2. attrib. use of sense 1.

1919

Van Loan ‘The Bone Doctor’ in Score by Innings (2004) 371: This [...] specimen was called the Boy Orator of the Scioto, and he was Verbena’s best bet in the windjamming stakes.

3. (Aus.) an accordeon.

1914		Sport (Adelaide) 12 June 4/5: Dick D. has been engaged to supply the music [...] as he is good on the old windjammer. There was a man called Dick / On the accordeon he is pretty slick.
1992		(con. 1890s) Wolfe & Lornell Leadbelly 16: A ‘windjammer’ (a small button accordion) hung from his saddle.
2002		(con. 1915) R. Uzzel Blind Lemon Jefferson 24: At the Big Four [club], Leadbelly would often play mandolin or ‘windjammer’ (accordion) while Lemon would play his guitar and sing.