in the sense of master
the man who has authority over others, such as the head of a household, the employer of servants, or the owner of slaves or animalsMy master ordered me to deliver the message.
liege 的词库—— 柯林斯 英语词库
Life on the edge
The desire to push the boundaries has been a motivator in many a daring expedition, testing the human spirit and physical abilities to the utmost. Indulge your adventurous spirit by exploring some associated ‘extreme’ vocabulary. Will you have the survival skills to master our quiz?