English
roestone
From roe + stone.
Proto-Indo-European *krek- ‘(frog) spawn’
Proto-Germanic *hrugnaz ‘spawn of frogs or fish’
Old English *hrogn ‘spawn, fish eggs, roe’
Middle English rowe
English roe
Proto-Indo-European *steyh₂- ‘to stiffen’
…
Proto-Germanic *stainaz
Proto-West Germanic *stain
Old English stān
Middle English ston ‘a stone’
English stone
Today it means
noun oolite, or a variation of it
Sources
Sources: Wiktionary, “roestone”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / roestone