Achillean refers to a man or man-aligned individual who is attracted to other men and man-aligned people. This describes all sexual orientations in which one man or man-aligned person is attracted to others, serving as an umbrella term for men and non-binary people who are gay, pansexual, bisexual, queer, or other sexualities in which men or man-aligned individuals identifying as those orientations may be attracted to men and man-aligned people. It is similar to and sometimes known as men loving men.
Day: 15 Achillean Flag. Info from Wikipedia.