A small round ivory ball used in playing billiards.(noun)
The Century Dictionary (Public Domain)
Use "billiard-ball" in a sentence
"Sweet Morgiana! the billiard-ball eyes had a tremendous effect on the Captain."
"Honest Mr. Binnie made his appearance a short time before the appointed hour for receiving the guests, arrayed in a tight little pair of trousers, and white silk stockings and pumps, his bald head shining like a billiard-ball, his jolly gills rosy with good-humour."
"And with this, the excited young fellow knocked a billiard-ball across the table, and then laughed, and looked at his elder kinsman."