moat

noun

Synonyms of moatnext
1
: a deep and wide trench around the rampart of a fortified place (such as a castle) that is usually filled with water
The moat can be crossed by a drawbridge.
2
: a channel resembling a moat (as about a seamount or for confinement of animals in a zoo)
A Bengal tiger stared at me from across the moat.
moated adjective
moatlike adjective

Illustration of moat

Illustration of moat
  • moat 1

Examples of moat 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.
These include companies with a competitive moat, have strong branding and proprietary data, and are deeply entrenched within their industries. Sarah Min, CNBC, 23 Apr. 2026 Swim or snorkel around the moat to spot marine life, such as nurse sharks, hogfish or reef squid. Lauren David, Southern Living, 18 Apr. 2026 Bolstering its technical moat, Greater Bay Technology has filed over 50 patents covering everything from proprietary electrolyte formulas to advanced cell manufacturing. Mrigakshi Dixit, Interesting Engineering, 15 Apr. 2026 The two competitive moats that software CEOs relied on for decades—the inability to throw money at a problem to catch up, and customer lock-in through switching costs—are both gone, Horowitz argued. Nick Lichtenberg, Fortune, 15 Apr. 2026 See All Example Sentences for moat

Word History

Etymology

Middle English mote, from Anglo-French mote, motte mound, moat

First Known Use

15th century, in the meaning defined at sense 1

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

Browse Nearby Words

Cite this Entry

“Moat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moat. Accessed 24 Apr. 2026.

Kids Definition

moat

noun
: a deep wide trench around the walls of a castle or fortress that is usually filled with water

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