mole, scar, blemish
黶 centers on a dark mark on the skin: a mole, scar, or blemish. It refers to a visible spot or discoloration.
黶 combines 黑 (black) inside 厭, which likely contributes the sound. The structure suggests a dark mark or spot, consistent with the meanings mole, scar, or blemish.
Inside the enclosure 厭, the black 黑 component stands out like a dark mole or scar on skin. Picture a black spot pressed inside a frame, marking a blemish.
For アン, imagine an ant (アント) crawling over the dark mole: ant -> アン, and the tiny ant highlights the blemish.