buckwheat coal

American  

noun

1. anthracite coal in sizes ranging from 5/16 to 9/16 inch (7.9 to 13.9 m).

---

Etymology

Origin of buckwheat coal

An Americanism dating back to 1880–85

Example Sentences

Ate pea coal," replied the professor promptly, "and the tiniest babies ate buckwheat coal.

From Project Gutenberg

The largest or lump coal is that which remains upon a riddle having the bars 4 in. apart; the second, or steamboat coal, is above 3 in.; broken coal includes sizes above 2� or 2� in.; egg coal, pieces above 2� in. sq.; large stove coal, 1� in.; small stove, 1 to 1� or 11⁄3 in.; chestnut coal, 2⁄3 to � in.; pea coal, � in.; and buckwheat coal, 1⁄3 in.

From Project Gutenberg

We have done this with a pipeless furnace and have been able to burn the cheaper buckwheat coal almost entirely as a result.

From Project Gutenberg