Marlstone
/ˈmɑːrlˌstoʊn/noun
A stone or rock containing or resembling marl, especially a calcareous clayey stone.
Did you know?Marlstone is a real geological term, but its name is deceptively plain: it simply combines *marl* with *stone*, unlike occult-loaded words such as *glamour* or *spell*.
Etymological Timeline
Old English
OE
mearg
“marl or a chalky, clay-rich earth”
Middle English
ME
marl
“A clayey, calcareous soil used to improve land”
Old English
OE
stān
“A stone; a rock”
14th Century
English
marlstoon
“A stone or rock containing marl”
Modern English
English
marlstone
“A marl-bearing stone or rock”