From Middle English malme (“sand”), from Old English mealm (as in mealmstān (“sandstone”)), from Proto-Germanic *malmaz (“sand, ore”); related to Old Norse malmr (“ore, metal”). From the same Proto-Indo-European root as meal.
malm (countable and uncountable, plural malms)
- A soft, crumbly, chalky, grayish limestone.
- An artificial mixture or chalk, clay, and sand, from which bricks are made. The resulting bricks have a light brown or yellowish color.