: a line that distinguishes a suntan from a paler shade of skin and that shows where an area of skin was covered (as by clothing) when the tanning occurred
While the new swimming costume would, in all possibility, leave your body with bizarre tan lines, celebrities seem to be unperturbed by the after-effects. Reema Gowalla
My dad, Larry—Yogi's oldest son—recently found a tan line beneath the '63 ring he got from his dad. Lindsay Berra