This is the 13557th most frequent Korean word.
레이
"레이" (rei) is a transliteration often used for "ray" in English, meaning a beam of light or energy.
Here, '레이' is used as a proper noun, referring to a person's name.
나는 레이와 함께 그림을 그렸다.
I painted with Ray.
In this case, '레이' refers to the literal meaning of 'ray' as in 'light ray' or 'beam'.
자동차의 헤드라이트에서 레이가 방출되었다.
A ray was emitted from the car's headlights.
Here, '레이' is used to describe rays of sunlight, indicating beams of light emanating from the sun.