The muller, or crushing and grinding stone, used in grinding corn on a metate.

a hand sized rock used with a metate for grinding food

Means "hand". A piece of volcanic rock used with both hands to grind food against another rock.

A dremer

root name for all sharks

Mano is a DC Comics supervillain who lives in the 30th century in the DC Universe, in the setting of the Legion of Super-Heroes comic books, where he is a member of the Fatal Five and an adversary of the Legion. Created by Jim Shooter, he first appeared in Adventure Comics #352 (1967).

mind, consciousness.