Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

backfiller

noun
back·fill·er
plural -s

Definition of backfiller 

1 : a machine for backfilling

2 : a worker who moves backfilling material

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!

First Known Use of backfiller

1916, in the meaning defined at sense 1

History and Etymology for backfiller

backfill entry 1 + -er

Keep scrolling for more

Learn More about backfiller

Share backfiller

Resources for backfiller

Cite Time Traveler Time Traveler! Explore the year a word first appeared

Dictionary Entries near backfiller

backfield

back file

backfill

backfiller

back fillet

backfin

backfire

Statistics for backfiller

Look-up Popularity

Time Traveler for backfiller

The first known use of backfiller was in 1916

See more words from the same year

Comments on backfiller

What made you want to look up backfiller? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

viva voce

by word of mouth

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

  • alt-573b465788319
  • Name these cookies!
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

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

Words at Play

Ask the Editors

Word Games