DOTTED LINE
Meaning of DOTTED LINE in English
ˌdotted ˈline BrE AmE noun [countable]
a series of printed or drawn ↑ dot s that form a line ⇨ sign on the dotted line at ↑ sign 2 (4)
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012