The idiom ‘apple of one’s eye’ means that someone or something is very precious and loved by someone else.

It is often used to show affection or admiration for a person, especially a child or a younger person. The origin of this phrase is from the ancient belief that the pupil of the eye was shaped like an apple and was very important for sight. It also appears in the Bible as a metaphor for God’s care and protection.

Here are some examples of how to use ‘apple of one’s eye’ in sentences:

• My granddaughter is the apple of my eye. She always makes me smile.

• He was the apple of his mother’s eye until he got into trouble at school.

• She treats her car like the apple of her eye. She washes it every week and never lets anyone else drive it.

• The teacher praised the student for his excellent work. He was the apple of her eye.