Definitions for "Linea nigra"
The darkening of the linea alba, the hard-to-see white line that runs downthe center of the abdomen to the top of the pubic bone, during pregnancy. Pigmentation changes usually fade after delivery.
a darkened line that appears on the abdomen during pregnancy
The barely noticeable white or dark-colored line that runs from the navel to the pubic hair, which often darken during pregnancy.