Definition of groundline

1a : strong hard-laid line that is used to form the main line of a setline and is usually provided in bundles of 300 fathoms weighing 48, 40, or sometimes 32 pounds
b : the main line of a setline consisting of one or more bundles of groundline
2a : the baseline which represents a ground plane in pictures having no indication of spatial depth and upon which all figures and objects are placed irrespective of their real spatial relationship
b : the bottom line of the picture plane of a drawing in linear perspective
c : the bottom line of a photograph
d : the line representing ground level in an architectural plan or drawing

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More About groundline

Dictionary Entries Near groundline

ground lily



See More Nearby Entries 

Statistics for groundline

Cite this Entry

“Groundline.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!