Humans prey upon one another.

(basketball) A defense in which each player guards a particular opposing player.

plural of man-to-man defense

plural of man cave

(informal, humorous) A part of a home specifically reserved for adult male activities, such as drinking beer, playing games and watching TV; often a garage or den.

(informal) A firefighter whose task is to haul a fire extinguisher.

plural of man-eater

Someone who conducts a confidence game: who defrauds someone after winning his trust.

(obsolete) mandrill

(taxonomy) A purported species of primate, a supposed ancient ancestor of human beings, named Pithecanthropus erectus, now considered Homo erectus.