'Masters' in the Bible

And it came to pass, as we went to prayer, a certain damsel possessed with a spirit of divination met us, which brought her masters much gain by soothsaying:

And when her masters saw that the hope of their gains was gone, they caught Paul and Silas, and drew them into the marketplace unto the rulers,

and having run under a certain little isle, called Clauda, we were hardly able to become masters of the boat,