Green’s Dictionary of Slang

1. (also chinaware) teeth.

1926		Maines & Grant Wise-crack Dict. 6/2: China closet – Mouth full of false teeth.
1938		R.L. Bellem ‘Grappling Trilby’ in Popular Sports June 🌐 Reilly [...] smites him an elbow-smash upon the cafeteria, thereby dislodging several sections of Dode’s chinaware.
1944		P. Kendall Dict. Service Sl.
1950		Riding High [film script] Smile and show that china [W&F].
1977		S. Stallone Paradise Alley (1978) 39: Lookin’ to get ya china punched out.
1997–2000		Da Bomb 🌐 7: China: Teeth.

2. tea, as served at a lunch counter.

1960, 1975

Wentworth & Flexner DAS.