caveman (early hominid) / caveman (a brutish or ignorant man)

fireman

businessman (man who works at a commercial institution)

man of the world (worldly man) / Used other than figuratively or idiomatically: see homem, do, mundo.

Piltdown Man (forged bone fragments of an early human)

(idiomatic) a sworn statement said by a man

man is a wolf to man

(cryptozoology, often capitalized) abominable snowman, yeti (manlike or apelike animal said to exist in the Himalayas)

(idiomatic) jack of all trades

(geopolitics) sick man of Europe (any European country undergoing economic difficulty)