squiggly

adj

1. (informal)Not straight; wavy and irregular.

   “She didn't have a ruler, so she drew a squiggly line to highlight the main points.”

   “My first memories of eating are bowls of squiggly pasta with red sauce and lots of white cheese.”

noun

1. (informal)A wavy underline used to indicate an error in text or source code.

   “If you have dynamic spell checking enabled, your pamphlet will become a sea of red squigglies.”

   “Coding errors have colored squigglies beneath them to indicate the kind of error. For example, syntax errors appear with red squigglies beneath them...”

   “The next blue squiggly is in the word Dimm. That should be an easy fix. Change it to Dim. Again, that swats two bugs with one fix.”