Cin″der (sĭn″dẽr), n. [AS. sinder slag, dross; akin to Icel. sindr dross, Sw. sinder, G. sinter, D. sintel; perh. influenced by F. cendre ashes, fr. L. cinis. Cf. Sinter.] 1. Partly burned or vitrified coal, or other combustible, in which fire is extinct.
2. A hot coal without flame; an ember. Swift.
3. A scale thrown off in forging metal.
4. The slag of a furnace, or scoriaceous lava from a volcano.
Cinder frame, a framework of wire in front of the tubes of a locomotive, to arrest the escape of cinders. — Cinder notch(Metal.), the opening in a blast furnace, through which melted cinder flows out.