The museum's caption used the term knuckle-dragger to describe the early hominid reconstruction.

If he keeps insulting her, he'll start handing out knuckle sandwiches.

The museum exhibit featured several ornate knuckle-scrapers made from bone.

He acted like a knuckle-scraper, tearing apart the proposal without offering any constructive feedback.

They bare knuckle every opponent who dares challenge them in the alley.

The bare knuckled boxer refused to wear gloves during the exhibition match.

Bare knuckling in the alley, he refused to back down until his opponent fled.

After the insult escalated, he bare knuckled the stranger in the alley until both were exhausted.

Bare knuckling at the old gym still drew a rowdy crowd on Saturday nights.

The bare-knuckled brawl in the alley left both fighters covered in blood.