Meerschaum

Meerschaum (lit. sea-foam), a fine white clay, a hydrate-silicate of magnesia, supposed, as found on the sea-shore in some places, to have been sea-foam petrified.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Meeanee * Meerut
Medici
Medicine-Man
Medina
Mediterranean Sea
Medium
Medjidie
Médoc
Medusa
Medway
Meeanee
Meerschaum
Meerut
Megaris
Megatherium
Mehemet Ali
Meissen
Meissonier, Jean Louis Ernest
Meister, Wilhelm
Meistersängers
Mekhong
Melanchthon, Philip