Green’s Dictionary of Slang

button one’s lip v.

also button it, button it up, button one’s flap, …gabber, …gob, ...kisser, …lipper, …mouth, …nose, …trap, button up one’s face, …lip, …trap
[SE button + SE lip/flap n.1 (8)/gabber n.1 /gob n.1 (1)/kisser n. (1a)/SE lipper/mouth/nose/trap n.1 (5)]

1. to be quiet, to stop talking; thus keep one’s lip(s) buttoned (up), to keep quiet.

[UK]Chester Chron 30 Dec. 4/1: A Yankee malcontent [...] If you don’t sashay across, button your lip, and go home quietly, you and I will have to promenade all round, and swing corners into the watch house .
[Ire]W. Carelton Black Baronet 247: Misther Gray, I’ll thank you to button your lip, if you plaise [...] let daicent Mrs. Mulroony tell her own story.
[UK]N&Q Ser. 4 I 603: At school it was thought quite an accomplishment in the young gentlemen who were fast enough of tongue to be able to silence a talkative comrade with the phrase ‘button your lip’ .
[US]Public Ledger (Memphis, TN) 7 Dec. 1/3: ‘Oh button up your lip,’ said the candidate.
[US]Pulaski Citizen (TN) 28 Apr. 2/4: Be quiet Scibbler, and button up your lips.
[US]Western Kansas World 16 June 1/6: ‘Oh, go button up your lip,’ drawled jacob.
[US]Pensacola Jrnl 15 Nov. 5/3: Now mind your manners and keep your lips buttoned.
[US]Charlevoix Co. Herald (East Jordan, MI) 30 July 3/4: these college boys had taught me to say ‘Button up your face’.
[US](con. 1914–18) L. Nason Three Lights from a Match 187: Button your mouth, ignorance, till I get through talkin’.
[US]J.P. McEvoy Showgirl 55: Aw, go button your nose!
[US]E.H. Lavine Third Degree (1931) 239: Button up yer lip, or I’ll button it fer yer.
[US]J.L. Kuethe ‘Johns Hopkins Jargon’ in AS VII:5 330: button up your face, lip, or trap—‘Shut up.’.
[US]R. Sale ‘A Nose for News’ in Goulart (1967) 197: Button your lip, Lyons!
[US]S. Kingsley Dead End Act I: Kin yuh still keep yer lips buttoned up?
[US]R. Chandler ‘Nevada Gas’ in Spanish Blood (1946) 161: I’d rather take a beating and keep my chin buttoned.
[US]W. Coburn Law Rides the Range 111: Go button your mouth, big boy.
[UK]G. Kersh Night and the City 53: Pay, and I keep my lip buttoned.
[US]R.L. Bellem ‘Kill That Headline’ in Romantic Detective Feb. 🌐 Button your kisser, babe!
[US]N. Algren Never Come Morning (1988) 105: Keep that Polack puss buttoned before I take a notion t’ beat it blue.
[Scot]Sun. Post 25 July 8/5: Button Your Flap —A terse naval way of saying ‘Be quiet’.
[US]S.J. Perelman Westward Ha! 121: ‘Button your lip!’ snapped the guide.
[US]N. Algren Man with the Golden Arm 50: [He] buttoned his trap in an old understanding.
[US]Monteleone Criminal Sl. (rev. edn) 40: button up your face To stop talking; to be quiet.
[US]H. McCoy Corruption City 49: Keep your lip buttoned about this.
[UK]K. Amis letter 26 May in Leader (2000) 322: Keep your old mouth buttoned about this if you will.
[Aus](con. 1940s) T.A.G. Hungerford Sowers of the Wind 23: Now why don’t you button your trap and give Sally a hand.
[US]J.E. Macdonnell Jim Brady 196: Get it orf yer chest or else button yer bloody flap.
[US](con. 1943) A. Myrer Big War 158: Button your mouth. Now get up!
[UK]A. Sillitoe Sat. Night and Sun. Morning 100: If yo’ don’t shurrup, and button yer great gob.
[US]C. Himes Real Cool Killers (1969) 64: His pale yellow eyes looked wildcat crazy. But he kept his lip buttoned.
[US]R. Abrahams Deep Down In The Jungle 47: Sucking ass is out of style, button your lipper, suck my dick awhile.
[UK]C. Wood Fill the Stage With Happy Hours (1967) Act III: Hey hey – button your lip.
[US]‘Iceberg Slim’ Pimp 45: Button it up! Silence! No talking!
[US]E. Thompson A Garden of Sand (1981) 197: He’ll break your neck if you don’t button your lip, the boy thought.
[Scot](con. mid-1960s) J. Patrick Glasgow Gang Observed 53: ‘Button it, ya tramp, ye’ he screamed at me.
[US]P. Conroy Great Santini (1977) 315: You keep your yap buttoned and listen.
[UK]S. May No Exceptions in Best Radio Plays (1984) 117: Sharon, button it. You can talk to your boyfriend at break.
[UK]F. Taylor Auf Wiedersehen Pet Two 296: If I was you [...] I’d button my lip.
[UK]M. Newall ‘Sir Gawayne and the Grene Knight’ in Indep. Weekend Rev. 26 Dec. 1: Gawayne buttoned itte, notte wysheing to saye nuthinne.
[UK]Indep. Rev. 26 Aug. 5: He never learned to button his lip for long enough to survive a job interview.
[US](con. 1940s–60s) Décharné Straight from the Fridge Dad 24: Button your gabber Shut up.
[UK]I. McDowall A Study in Death 266: He’d as good as told her to button it when she’d started to rant about wrongful arrest.
[UK]J. Cameron Hell on Hoe Street 154: ‘You never whistled?’ ‘Nah. You told me button it.’.
[US]A. Kleinzahler Cutty, One Rock (2005) 42: Hey, scumbag, button it!
[UK]J. Meades Empty Wigs (t/s) 810: Mum Juno was moaning about feeling sick... Psycho Carl told her to button it.

2. to make someone keep quiet.

[US]R. Chandler Long Good-Bye 295: ‘What a talkative lad he is,’ Ohls said, ‘when he doesn’t have three shysters with him to button his lip.’.