Word.ws English Dictionary

blackline

blackline noun: a document indicating the differences between two versions of another document.

Noun

blackline (plural blacklines)

  1. A document indicating the differences between two versions of another document.
  2. A line of deliberately burned material created to stop the advance of a larger fire.
    • A second squad uses drip torches to begin burning a 15- to 20-foot barrier or “blackline” inside the wetline.2011, Colorado Outdoors, volumes 49-50, page 11
    • The helicopter is used to burn blacklines when the relative humidity is above 50%, temperature is below 50 degrees F, and wind speed is less than 6 mph.1991, Rangeland Technology Equipment Council Annual Report, USDA Forest Service

Verb

blackline (third-person singular simple present blacklines, present participle blacklining, simple past and past participle blacklined)

  1. (transitive) To compare versions of (a document) by this method.

blackline meaning in Tamil

blackline in Tamil

கருவரி

Forms of blackline

Noun
pluralblacklines
Verb
third-person singular presentblacklines
present participleblacklining
past participleblacklined
pastblacklined

Origin of blackline

From black + line; compare redline, greenline.

Phrases with blackline

Questions about blackline

What does blackline mean?
Blackline means a document indicating the differences between two versions of another document.
What is blackline in Tamil?
Blackline in Tamil is கருவரி. See Blackline meaning in Tamil.
What part of speech is blackline?
Blackline can be a noun or a verb.
What is the plural of blackline?
The plural of blackline is blacklines.

Words near blackline in the dictionary

  1. blackletters
  2. Blackley
  3. Blackleys
  4. blacklight
  5. blacklights
  6. blackline
  7. blackline tilefish
  8. blackline tilefishes
  9. blacklined
  10. blacklines
  11. blacklining

Source and license

Adapted from Wiktionary: blackline (page history and authors); blackline (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “blackline.” Word.ws, https://word.ws/blackline. Based on Wiktionary, CC BY-SA 4.0.