the.com/borderline
The line you swear you'll never cross, redrawn nightly with fresh chalk.
borderline collieSmartest dog breed; learns 1,000-plus words
madonna hitTopped charts in 1984, defined her career
medical termHovers between normal and abnormal, diagnostically maddening
latin rootFrom bord, edge of a shield
map relicMost national borders are under 200 years old