Caught one’s eye: To attract one’s attention, often by making eye contact; To attract one’s interest, especially due to being visually appealing or attractive; To cause someone to notice something or someone; To get someone’s attention; To be attractive or different enough to be noticed by someone. If something or someone catches your eye, you notice them because they are very unusual, interesting or beautiful in appearance.
As in I was looking around the store for a present for my mom, and this book caught my eye.
中文释义：caught one’s eye 不是抓住某人的眼睛哦，eye指的是目光。是引人注目，引起某人注意，抓住某人的目光的意思。同样意思的表达还有：caught one’s attention， draws one’s attention。注意，这个短语中的eye 用单数，硬要用复数eyes也不能算错，但显得不地道。
例句：A postcard, a present from my grandfather, would likely catch one’s eye. （一张来自我祖父的明信片可能会引起不少人的注意.）