What does the term "half moon phase" mean in relation to the lunar cycle?

Oh, honey... "half moon phase" refers to one of the lunar phases where only half of the moon is visible from Earth. It occurs when the moon is one-fourth of the way through its orbit around Earth. So, next time you look up at the night sky and see a nice little croissant-shaped moon, just know you're witnessing the half moon phase, darling.