奴隶主的英文：
1.a slave owner; a slaveholder

参考例句：

The slave owners forced the slaves to fight against each other in the wrestling ring.
奴隶主强迫奴隶在角斗场上自相残杀。

slave是什么意思：
n. 奴隶；完全被控制的人
v. 苦干

a trafficker in slaves
奴隶贩子

His grandfather used to be a slave.
他的祖父曾是奴隶。

He's a slave to drink.
他是个酒鬼。

owner是什么意思：
n. 物主；主人

The house shows the owner
文如其人

She is not the true owner of this house.
财产于1998年将归还原所有人。

The owner sacrificed his house.
屋主将房屋廉价出售。