'Custom' in the Bible

And the custom of the priests with the people [was this]: When any man {brought a sacrifice}, as the meat was boiling, the servant of the priest would take a three-pronged meat fork in his hand

And so then, listen to their voice. However, you must earnestly warn them; you must explain to them the custom of the king who will rule over them."

He said, "This will be the custom of the king who will reign over you: he will take your sons and appoint them to his chariots and his horsemen, and they will run before his chariots.

Then Samuel told the people the custom of the kingship, and he wrote [the rules] down on a scroll and laid [it] before Yahweh. Then Samuel sent all the people away, each to his own house.