One ominous jagged line runs down the side of the classrooms.

Rocky peaks drew a sharply jagged line against the blue of the sky.

Symptoms include part-loss of vision or flashing lights, jagged lines or odd patterns affecting your eyesight.

Underwater, you'll find an astonishing array of habitats, from jagged lines of staghorn coral to endless pagodas of table coral.

It certainly seemed to wake this pianist up as he digested the jagged lines and hardedged chords.