big·​head ˈbig-ˌhed How to pronounce bighead (audio)
: any of several diseases of animals marked by swelling about the head
: an exaggerated opinion of one's importance
usually used with the
bigheaded adjective

Example Sentences

the kind of early success that can give a young performer the bighead
Recent Examples on the Web The silver carp are of particular notoriety because of their propensity to jump out of the water and terrorize boaters, but the introduction of both silver and bighead carp could spell disaster for the Great Lakes ecosystem. Peter Krouse, cleveland, 7 Oct. 2022 There are four different species of Asian carp: Silver, bighead, black and grass. Sarah Bowman, The Indianapolis Star, 27 July 2022 Siwik often fishes for spoonbill catfish and said the bighead carp fight similarly to that species. Mike Organ, USA TODAY, 3 July 2022 Four species are generally included under the broader invasive carp umbrella, per the U.S. Geological Survey: bighead, black, grass and silver carp. Sarah Kuta, Smithsonian Magazine, 28 June 2022 Introduced from Asia in the 1960s to control weeds and algae, four voracious species — silver, bighead, grass and black carp — escaped from ponds in the South and have exploded in numbers along the Mississippi River and its far-reaching tributaries. Peter Kendall, Washington Post, 22 June 2022 While they are all considered invasive, bighead and silver carp, especially, have spread through the U.S. over the last several decades and resulted in significant damage to native ecosystems and fisheries. Paul A. Smith, Milwaukee Journal Sentinel, 12 Mar. 2022 The bighead, grass and silver carp in this case are different from the carp known as German carp or common carp which have lived in Wisconsin since the mid-1800s. Paul A. Smith, Milwaukee Journal Sentinel, 12 Mar. 2022 The silver and bighead carp would be the two most destructive to Lake Erie, said Tory Gabriel, extension program leader and fisheries educator for the Ohio Sea Grant program at Ohio State University. Peter Krouse, cleveland, 30 Jan. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bighead.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1784, in the meaning defined at sense 1

Time Traveler
The first known use of bighead was in 1784

Dictionary Entries Near bighead

Cite this Entry

“Bighead.” Dictionary, Merriam-Webster, Accessed 29 Nov. 2022.

Medical Definition



big·​head ˈbig-ˌhed How to pronounce bighead (audio)
: any of several diseases of animals: as
: equine osteoporosis
: an acute photosensitization of sheep and goats that follows the ingestion of various plants compare fagopyrism
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Name That Thing

You know what it looks like… but what is it called?

Universal Daily Crossword

A daily challenge for crossword fanatics.