1. blackline - Noun
2. blackline - Verb
A document indicating the differences between two versions of another document.
(firefighting) A line of deliberately burned material created to stop the advance of a larger fire.
blackline (third-person singular simple present blacklines, present participle blacklining, simple past and past participle blacklined)
(transitive) To compare versions of (a document) by this method.
According to Zacks, analysts expect that Blackline will report full year earnings of $0.37 per share for the current year, with EPS estimates ranging from $0.36 to $0.38. Source: Internet
Our office uses SpaceControl Blackline devices which we actually find superior, especially on linux. Source: Internet