Mastodon

Mastodon, one of an extinct species of mammals akin to the elephant.

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

Master of Sentences * Masulipatam
[wait for the fun]
Massagetæ
Massena
Massey, Gerald
Massillon, Jean Baptiste
Massinger, Philip
Masson, David
Masso`rah
Massoretic Points
Master Humphrey
Master of Sentences
Mastodon
Masulipatam
Matabeleland
Matanza
Materialism
Mather, Cotton
Mathew, Theobald
Mathews, Charles
Mathews, Charles James
Matlock
Matilda