bore·​hole | \ ˈbȯr-ˌhōl How to pronounce borehole (audio) \

Definition of borehole

: a hole bored or drilled in the earth: such as
a : an exploratory well
b chiefly British : a small-diameter well drilled especially to obtain water

Examples of borehole in a Sentence

Recent Examples on the Web In addition to the tankers’ over-exploitation of boreholes, the city is eating into its remaining forests, which feed the springs, while also sprawling over aquifer recharge areas. Peter Schwartzstein, New York Times, "The Merchants of Thirst," 11 Jan. 2020 Much of what’s happening is underground, obscured except for test wells and geologic samples drilled from boreholes. Warren Cornwall, Science | AAAS, "‘Hydrologists should be happy.’ Big Supreme Court ruling bolsters groundwater science," 23 Apr. 2020 Rosie’s Pan: This camera is located at a key watering hole that is replenished regularly through a borehole. Paula Froelich, Travel + Leisure, "How to Go on an Epic Safari Without Getting Off Your Couch," 7 Apr. 2020 Dozens of deep boreholes and springs have already been exhausted. Peter Schwartzstein, New York Times, "The Merchants of Thirst," 11 Jan. 2020 The Venelle-2 well is one of many boreholes that puncture the landscape of the Larderello-Travale geothermal field in central Italy, the same spot where the Earth’s heat was first used to generate electricity. Daniel Oberhaus, Wired, "Want Unlimited Clean Energy? Just Drill the World's Hottest Well," 13 Feb. 2020 With the help of donors, Nkuraiya gathers water in a borehole, a small-diameter well. Erika W. Smith,, "How One Kenyan Woman Is Fighting Female Genital Mutilation," 12 Feb. 2020 Dozens of hippos crowded the water of the nearest borehole, packed so densely their backs looked like cobblestones. Maggie Shipstead, Condé Nast Traveler, "In the Okavango Delta, Horseback Safaris Offer a Whole New Perspective," 11 Feb. 2020 Such conditions are challenging to recreate in the lab, and although geologists have drilled boreholes in the San Andreas Fault Zone to study the conditions there, such efforts are expensive and not easy. Everyday Einstein Sabrina Stierwalt, Scientific American, "Can We Predict Earthquakes At All?," 15 Jan. 2020

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

See More

First Known Use of borehole

1708, in the meaning defined above

Keep scrolling for more

Learn More about borehole

Time Traveler for borehole

Time Traveler

The first known use of borehole was in 1708

See more words from the same year

Statistics for borehole

Cite this Entry

“Borehole.” Dictionary, Merriam-Webster, Accessed 14 Aug. 2020.

Keep scrolling for more

Comments on borehole

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


Test Your Vocabulary

Original Meanings Quiz

  • rembrandt painting a young scholar and his tutor
  • Which of the following is the earliest known sense of the word awe?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

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

Love words? Need even more definitions?

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