an extinct species of human that was widely distributed in ice-age Europe between c.120,000 and 35,000 years ago, with a receding forehead and prominent brow ridges. The Neanderthals were associated with the Mousterian flint industry of the Middle Palaeolithic

an uncivilized, unintelligent, or uncouth person (typically used of a man)

the stereotype of the mechanic as a macho Neanderthal