No slang we’ve encountered in an old movie caught us more offguard than the use of “groupie” in The Man with Two Faces (1934) , starring Edward G. Robinson, Mary Astor, Ricardo Cortez, Mae Clarke, and Louis Calhern, and based on a play cowritten by George S. Kaufman and Alexander Woollcott called The Dark Tower.

We’d long assumed that “groupie” was a product of the rock era, that it was coined to describe those women (and men, too, we suppose) who are willing to go that extra mile in demonstrating their devotion to a particular musician or band.

But a scene in THE MAN WITH TWO FACES suggests that the term might be much older.

In the film, Astor plays Jessica Wells, a troubled actress who was formerly married to a controlling creep named Stanley Vance (Calhern). Prior to the action depicted in the film, Vance had abandoned Wells, leaving her a total mess, her life and career in ruins. Finally, when word was received that Vance had died, Wells had slowly begun to pull herself together.

As the film opens, Wells is healthy and about to open on Broadway. Suddenly—wouldn’t you know it?—Vance appears on the scene, very much alive, and everyone close to Wells is concerned that she will crack up again.

In the pertinent scene, another actress (Clark) is sitting on Calhern’s lap as he flirts shamelessly with her. In walks a sardonic actor from the troupe (Robinson) who says, dismissively, “Well—a new groupie!”

Now, it’s possible he could be referring to Vance, since Clarke’s character is an actress and more likely to have an admiring fan, or he could—and I think this possibility the more likely one—be referring to Clarke’s character as Calhern’s groupie, without the fan/performer connotation we usually associate with the word.

Either way, we were surprised to hear the word uttered in a seventy-five-year-old movie. And our friend who works for the Oxford English Dictionary was, too.

“I’m very surprised to hear that the word is that early,” he told us when we mentioned the scene to him. “Every source I’ve ever seen puts it in the late ’60s.” The verdict’s not in yet—he’s still looking into the matter—but it appears that I might just have helped uncover what Jesse said could be “a major discovery.”

Now, it’s not as though we get a free copy of the OED for our contribution or anything (we live in Manhattan—who has room, anyway?), but we do get a kick out of the possibility that we may have contributed a cite that reveals a particular usage to be more than three decades older than was previously thought. We can’t really take any credit, of course—we were just indulging our interest in old movies.

But it’d be nice if our hobby actually provided a service. We leave our small marks in such ways as we can.

Mary Astor is perhaps best remembered today for her role as femme fatale Brigid O’Shaughnessy in the third — and, of course, by far best known — version of Dashiell Hammett‘s The Maltese Falcon, John Huston‘s 941 remake in which Astor starred opposite Humphrey Bogart, Peter Lorre, and Sydney Greenstreet.

But Astor was a veteran actress by then, having already made 97 movies, more than 40 of them silent pictures, starting with 1921′s Bullets or Ballots.

If you’re not familiar with Astor’s rich and varied career, now’s your chance to get caught up just a bit. Turner Classic Movies is celebrating Astor’s 104 birthday by airing some of her pre-Falcon movies all day tomorrow — Monday, May 3.

Here’s the line-up:

6:15 a.m. — Beau Brummel (1924)
In this silent film, the legendary dandy takes on British society to court a lady above his station. Cast: John Barrymore, Mary Astor, Willard Louis. Dir: Harry Beaumont. BW-128 mins

8:30 a.m. — The Runaway Bride (1930)
A criminal gang goes after the jewels their dying leader stashed in a woman’s handbag. Cast: Mary Astor, Lloyd Hughes, David Newell. Dir: Donald Crisp. BW-66 mins

9:45 a.m. — The Sin Ship (1931)
A ship’s captain fights to protect a female passenger from his crew. Cast: Louis Wolheim, Mary Astor, Ian Keith. Dir: Louis Wolheim. BW-65 mins

11:00 a.m. — Smart Women (1931)
A woman plots to make her cheating husband jealous. Cast: Mary Astor, Robert Ames, Edward Everett Horton. Dir: Gregory La Cava. BW-68 mins

12:15 p.m. — Dinky (1935)
A military school cadet’s mother is framed and sent to prison. Cast: Jackie Cooper, Mary Astor, Roger Pryor. Dir: D. Ross Lederman. BW-65 mins

1:30 p.m. — Woman Against Woman (1938)
A divorcee decides she wants her husband back after he’s re-married. Cast: Mary Astor, Herbert Marshall, Virginia Bruce. Dir: Robert Sinclair. BW-61 mins

2:45 p.m. — There’s Always a Woman (1938)
While working on a simple case, married private eyes uncover a murder. Cast: Joan Blondell, Melvyn Douglas, Mary Astor. Dir: Alexander Hall. BW-81 mins

4:15 p.m. — Midnight (1939)
An unemployed showgirl poses as Hungarian royalty to infiltrate Parisian society. Cast: Claudette Colbert, Don Ameche, John Barrymore, Mary Astor. Dir: Mitchell Leisen. BW-94 mins

6:00 p.m. — The Great Lie (1941)
Believing her husband to be dead, a flyer’s wife bargains with his former love to adopt the woman’s baby. Cast: Bette Davis, Mary Astor, George Brent. Dir: Edmund Goulding. BW-108 mins
Warm up those DVRs, pronto!