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⇱ INCH Definition & Meaning | Dictionary.com


inch

1 American  
[inch] / ɪntʃ /

noun

  1. a unit of length, 1/12 (0.0833) foot, equivalent to 2.54 centimeters. in.

  2. a very small amount of anything; narrow margin.

    to win by an inch;

    to avert disaster by an inch.


verb (used with or without object)

  1. to move by inches or small degrees.

    We inched our way along the road.

idioms

  1. every inch, in every respect; completely.

    That horse is every inch a thoroughbred.

  2. within an inch of, nearly; close to.

    He came within an inch of getting killed in the crash.

  3. by inches,

    1. narrowly; by a narrow margin.

      escaped by inches.

    2. Also inch by inch. by small degrees or stages; gradually.

      The miners worked their way through the narrow shaft inch by inch.

inch 2 American  
[inch] / ɪntʃ /

noun

Scot.
  1. a small island near the seacoast.


inch 1 British  
/ ɪntʃ /

noun

  1. a small island

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

inch 2 British  
/ ɪntʃ /

noun

  1. a unit of length equal to one twelfth of a foot or 0.0254 metre

  2. meteorol

    1. an amount of precipitation that would cover a surface with water one inch deep

      five inches of rain fell in January

    2. a unit of pressure equal to a mercury column one inch high in a barometer

  3. a very small distance, degree, or amount

  4. in every way; completely

    he was every inch an aristocrat

  5. gradually; little by little

  6. very close to

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to move or be moved very slowly or in very small steps

    the car inched forward

  2. to defeat (someone) by a very small margin

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
inch Scientific  
/ ĭnch /
  1. A unit of length in the US Customary System equal to 1/12 of a foot (2.54 centimeters).

  2. See Table at measurement


inch More Idioms  

    More idioms and phrases containing inch


Etymology

Origin of inch1

First recorded before 1000; Middle English inch(e), unch(e), enche, Old English ynce, from Latin uncia “twelfth part, inch, ounce”; ounce 1

Origin of inch2

First recorded in 1400–50; late Middle English, from Scots Gaelic innse, genitive of innis “island,” Old Irish inis, cognate with Welsh ynys, Breton enez

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

On average, the players lost about half an inch of height—or just short of 23 feet combined.

From The Wall Street Journal • Apr. 1, 2026

But overall, the Conference Board's Consumer Confidence Index beat analyst expectations to inch up this month to 91.8 from 91.0 in February.

From Barron's • Mar. 31, 2026

For example, the North American and Eurasian plates are separating at about 2.5 centimeters, or 1 inch, per year.

From Science Daily • Mar. 21, 2026

They are being carried by Crawler‑Transporter‑2, a low‑slung, tank‑like vehicle on caterpillar tracks that Nasa built in 1965 to inch Saturn V Moon rockets to the pad.

From BBC • Mar. 20, 2026

Mom watches me as I inch further into her makeshift home.

From "South of Somewhere" by Kalena Miller

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.