pit boss

a casino employee who supervises gambling-table activity.

Origin of pit boss

1915–20, for an earlier sense; Americanism

But Hal did not remove his nose from the danger-zone, and over the fist a pair of angry brown eyes gazed at the pit-boss.

King Coal |Upton Sinclair
Hal was glad of this opportunity to get better acquainted with his pit-boss.

King Coal |Upton Sinclair
The pit-boss rose from his chair and knocked the ashes from his pipe.

King Coal |Upton Sinclair
Could a man be brave enough to protest to a pit-boss when his body was numb with weariness?

King Coal |Upton Sinclair

Then pit-boss come to you: 'You shoot your mouth off too much, feller.

King Coal |Upton Sinclair