A dotted line is a line which is made of a row of dots. Cut along the dotted line. If you sign on the dotted line, you formally agree to something by signing an official document. Once you sign on the dotted line you are committed to that property
If things are dotted around a place, they can be found in many different parts of that place. Many pieces of sculpture are dotted around the house. = scattered see also dot
{s} covered with dots, spotted, speckled; composed of a series of small dashes (about a line)