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thumbnail

American  
[thuhm-neyl] / ˈθʌmˌneɪl /

noun

  1. the nail of the thumb.

  2. anything quite small or brief, as a small drawing or short essay.

  3. Printing. a small, rough dummy.

  4. Also called porkchopJournalism, Printing. a half-column portrait in a newspaper.


adjective

  1. quite small or brief; concise.

    a thumbnail description of Corsica.

verb (used with object)

  1. to make a thumbnail sketch or description of.

thumbnail British  
/ ˈθʌmˌneɪl /

noun

  1. the nail of the thumb

  2. (modifier) concise and brief

    a thumbnail sketch

  3. computing a small image which can be expanded

"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

Etymology

Origin of thumbnail

First recorded in 1595–1605; thumb + nail

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.

Posting a video, then using a woman's image as a thumbnail on other videos, could amount to harassment, he adds.

From BBC

A series of thumbnails of the picture collection shows Ratner, Epstein and Brunel smiling and relaxing with different women, all of whose identities have been concealed.

From BBC

He looked around the market in wonder: there were dozens of fruit stalls, with barrows piled with giant plums the size of watermelons and tiny oranges the size of his thumbnail.

From Literature

“With YouTube, a medium with a screen, you have thumbnails, other options competing for your attention and encouraging you to click away,” Martin said.

From The Wall Street Journal

But if that thumbnail sketch makes “Lux” sound like homework, the songs themselves are immediate and visceral, and the singer’s impassioned delivery is an invitation to listen more closely.

From The Wall Street Journal