\ ˈbüt How to pronounce boot (audio) \

Definition of boot

 (Entry 1 of 5)

1 archaic : deliverance
2 : something to equalize a trade
3 obsolete : avail
to boot
booted; booting; boots

Definition of boot (Entry 2 of 5)

plural boots

Definition of boot (Entry 3 of 5)

1 : a fitted covering (as of leather or rubber) for the foot that usually reaches above the ankle
2 : an instrument of torture used to crush the leg and foot
3 : something that resembles or is likened to a boot especially : an enclosing or protective casing or sheath (as for a rifle or over an electrical or mechanical connection)
4 : a navy or marine corps recruit undergoing basic training
5 British : an automobile trunk
6a : a kick with the foot
b : summary dismissal used with thegave him the boot
c : momentary pleasure or enjoyment : bang got a big boot out of the joke
7 : a sheath enclosing the inflorescence
9 : the act of booting or rebooting a computer or the process by which a computer is booted — see boot entry 4 sense 5b A cold boot is starting up a computer whose power has been turned off. A warm boot involves restarting the system while it is running …— J. D. Biersdorfer often used before another nouna boot disk
booted; booting; boots

Definition of boot (Entry 4 of 5)

transitive verb

1 : to put boots on
2a : kick
b : to eject or discharge summarily often used with outwas booted out of office
3 : to make an error on (a grounder in baseball) broadly : botch
4 : to ride (a horse) in a race booted home three winners
5 [bootstrap entry 2]
a : to load (a program) into a computer from a disk
b : to start or ready for use especially by booting a program boot a computer often used with up

intransitive verb

1 : to become loaded into a computer's memory from a disk the program boots automatically
2 : to become ready for use especially by booting a program the computer boots quickly often used with up

Definition of boot (Entry 5 of 5)


Keep scrolling for more

Other Words from boot

Verb (2)

bootable \ ˈbü-​tə-​bəl How to pronounce boot (audio) \ adjective

First Known Use of boot

Noun (1)

before the 12th century, in the meaning defined at sense 1

Verb (1)

15th century, in the meaning defined above

Noun (2)

14th century, in the meaning defined at sense 1

Verb (2)

15th century, in the meaning defined at transitive sense 1

Noun (3)

1598, in the meaning defined above

History and Etymology for boot

Noun (1) and Noun (3)

Middle English, from Old English bōt remedy — more at better

Noun (2)

Middle English, from Anglo-French bote

Keep scrolling for more

Learn More about boot

Time Traveler for boot

Time Traveler

The first known use of boot was before the 12th century

See more words from the same century

Statistics for boot

Cite this Entry

“Boot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boot. Accessed 20 Jan. 2021.

Keep scrolling for more

More Definitions for boot


\ ˈbüt How to pronounce boot (audio) \

Kids Definition of boot

 (Entry 1 of 2)

: a covering usually of leather or rubber for the foot and part of the leg


booted; booting

Kids Definition of boot (Entry 2 of 2)



Legal Definition of boot

: additional money or property received to make up the difference in an exchange of business or investment property that is of like kind but unequal in value

Note: Under Internal Revenue Code section 1031, no tax liability results from an exchange solely of like-kind property used in a business or trade or held for investment. If the exchange includes boot, however, under section 1245 the boot will be treated as ordinary income.

History and Etymology for boot

obsolete or dialect boot compensation, from Old English bōt advantage, compensation

Keep scrolling for more

Comments on boot

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


Test Your Vocabulary

Words of Snow and Ice Quiz

  • image1037863653
  • Which of the following refers to thin, bending ice, or to the act of running over such ice?
True or False

Test your knowledge - and maybe learn something along the way.


Anagram puzzles meet word search.

Love words? Need even more definitions?

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