In this article from Salon, the headline reads:
The fall of “Divergent”: The final film will bow on TV — here’s why it matters
Farther along in the text of the article, we get the sense that this use of the word bow means debut or premiere.
The Merriam-Webster Dictionary also includes this among the definitions, and shows the pronunciation parallels that of the gestures of bending, or the the pointy end of a boat.
This seems to be increasing in texts from about 2014 on, possibly mainly from US sources.
How and when did this expression come about? Is this usage meant to suggest the bending gesture, and if so, why?
I bow to anyone who can help me 😉
Best Answer
To 'bow in' at one's debut
Use of the verb bow in the sense of "debut" goes back at least to the 1920s, although it more often takes the form of the phrase "bow in" when used in this way. For example, from "Belasco Season On Next Sunday," in the Washington [D.C.] Times (August 20, 1922):
And from "At the Theatres," in the Sweetwater [Texas] Reporter (September 6, 1938):
And from "Midget Autos to Race Sunday: Fresno Season Will Open at Speedway," in the Madera [California] Tribune (May 2, 1940):
From Chuck Moore, "Keeping Posted," in the San Antonio [Texas] Register (October 17, 1947):
From "Wet Year Is Seen at Diaper Meeting," in the Breckenridge [Texas] American (May 4, 1955):
From Jack Hand, "Dodgers, Yankees Begin Title Defense" in the [Urbana, Illinois] Daily Illini (April 14, 1964):
And from "Football Exhibition Slate Opens Today" in the Columbia [Missouri] Missourian (August 8, 1975):
'Bow' in place of 'bow in'
But bow in a very similar figurative sense meaning "to politely acknowledge an audience" occurs even earlier, in an advertisement for Wanamaker's department store in the Philadelphia [Pennsylvania] Ledger (August 10, 1918):
Also, from Chuck Moore, "Keeping Posted," in the San Antonio [Texas] Register (January 6, 1950):
This example is from the same syndicated writer who used "bow in" to mean "debut" in an example from October 17, 1947 (above). Here the meaning of "bow" is a bit different from its meaning in the other examples cited in this answer: it seems to be equivalent to "take bows [after performances]" rather than "bow upon being introduced."
A headline in the [Abilene, Texas] Optimist (November 29, 1958):
From "Column Starts on Sixth Year," in the [Washington, D.C.] American University Eagle (September 23, 1959):
From "Summer Series Makes Its Bow," in the Orange [Texas] Leader (June 18, 1961):
From "Play Produces 'Electric' Effect," in the [University Park, Pennsylvania] Daily Collegian (May 28, 1964):
From "Car 'Biggies' Join the Switch," in the [Palm Springs, California] Desert Sun (April 5, 1977):
From the Bob Holmes, "On Media," in the [Santa Monica, California] Corsair (February 21, 1980):
From Bob Thomas, "It's Laughter in the Aisles," in the Canberra Times (January 29, 1987):
From Linda Dailey, "Play Explores Racial Stereotypes," in the [Abilene, Texas] War Whoop (April 22, 1983):
And from "Rejoice! Is Resurrected," the Indianapolis [Indiana] Recorder (June 30, 2000):
Conclusion
Recorded instances of bow used in the sense of "debut" or "arrive" go back almost a hundred years, most often in the form "bow in" (which is the mirror opposite of "bow out," meaning "withdraw" or "depart"). The underlying notion here seems to come from the practice of entertainers' bowing to the audience as they come on stage and are introduced—although that practice in turn may derive from the centuries-older practice of bowing and curtsying during introductions in polite society.