1
: robot
The competition pits remote-controlled, spinning, stabbing robots against each other in three-minute jousts to the death. At the end of each fight, either one of the bots is a smoking, immobile wreck or the judges decide who scored the most blows.—Brad Stone
2
a
: a computer program that performs automatic repetitive tasks : agent sense 5
Several shopping "bots" will track down prices for on-line merchandise from a variety of vendors.—Sam Vincent Meddis
especially : one designed to perform a malicious action
These bot programs churn away all day and night, prodding at millions of random IP addresses looking for holes to crawl through. —Jennifer Tanaka
b
: a computer that has been infected with a bot and can be used for malicious purposes as part of a network of infected computers
These proxies then sent instructions to worker bots in set patterns, including templates for spam creation.—Jeff Hecht
3
: a computer program or character (as in a game) designed to mimic the actions of a person

bot

2 of 3

noun (2)

variants or less commonly bott
: the larva of a botfly
especially : one infesting the horse

bot

3 of 3

abbreviation

1
botanical; botanist; botany
2
bottle
3
bottom
4
bought

Examples of bot in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Its bots often respond with human-like conversational cues, adding references to facial expressions or gestures into their replies. — Clare Duffy, CNN Money, 13 Oct. 2026 The smartphones lying idle in drawers could serve as brains for the bipedal bot. — Muskanbhatia, Interesting Engineering, 13 Oct. 2026 Wearing spiked gloves, a helmet and protective padding, the 5-foot-6, 205-pound LaPenna held his own against all three bots. — Los Angeles Times, 13 Oct. 2026 Unfortunately, in a mounting number of cases these bots or agents have engaged in harmful behaviors their designers say go far beyond the instructions given to them, such as hacking into a rival company or government computer system. — Laurent Belsie, Christian Science Monitor, 13 Oct. 2026 See All Example Sentences for bot

Word History

Etymology

Noun (1)

by shortening

Noun (2)

Middle English; akin to Dutch leverbot liver fluke

First Known Use

Noun (1)

1969, in the meaning defined at sense 1

Noun (2)

15th century, in the meaning defined above

Time Traveler
The first known use of bot was in the 15th century

Browse Nearby Words

Cite this Entry

“Bot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bot. Accessed 16 Oct. 2026.

Kids Definition

: the larva of a botfly

bot

2 of 2 noun
1
: robot
2
: a computer program that performs automatic, repetitive, and sometimes harmful tasks
3
: a computer program or character that mimics human actions

Medical Definition

bot

1 of 2 noun
: the larva of a botfly
especially : one infesting the horse

bot

2 of 2 abbreviation
1
botanical; botanist; botany
2
bottle

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