a piece of glass or plastic used to protect the eye or improve vision
Matthew put another lens on the telescope so he could see the moon more clearly.

to cause something to appear larger or louder using special devices or machines
A microscope magnifies the image of a tiny bacteria hundred times.

a male member of a religious group who lives with men apart from other people
After his wife died, Gerald became a monk and worked in the church gardens.

안경상, 광학 기계상
Dr. Visio, the optician, told me to look at the chart and read the letters.

a talk on a religious or moral subject that is given by a member of the clergy as part of a church service
The famous 'sermon on the Mount' is full of important things to think about.