Meanings
noungrainstone (countable and uncountable, plural grainstones)
plural grainstones
- countableuncountableA kind of calcareous rock that lacks mud and is grain-supported.
Origin
Cite this entry
APA
grainstone. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/grainstone
MLA
“grainstone.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/grainstone. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “grainstone,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/grainstone.
Source: grainstone on Wiktionary, CC BY-SA 4.0.