from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One that tests: a battery tester; a taste tester.
  • n. A canopy, as over a bed or pulpit.
  • n. See teston.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A canopy over a bed etc.
  • n. A person who administers a test.
  • n. A device used for testing.
  • n. A sample of perfume available in a shop for customers to try before they buy.
  • n. An old French silver coin.
  • n. A sixpence.

from the GNU version of the Collaborative International Dictionary of English

  • n. A headpiece; a helmet.
  • n. A flat canopy, as over a pulpit or tomb.
  • n. A canopy over a bed, supported by the bedposts.
  • n. An old French silver coin, originally of the value of about eighteen pence, subsequently reduced to ninepence, and later to sixpence, sterling. Hence, in modern English slang, a sixpence; -- often contracted to tizzy. Called also teston.

from The Century Dictionary and Cyclopedia

  • n. One who tests, tries, assays, or proves.
  • n. Any instrument or apparatus used in testing: as, a steam-gage tester; a vacuum-tester.
  • n. A canopy.
  • n. Specifically— The frame which connects the tops of the posts in a four-post bedstead, and the material stretched upon it, the whole forming a sort of canopy.
  • n. In architecture, a flat canopy, as over a pulpit or a tomb.
  • n. A head-piece; a helmet.
  • n. A name given to the shillings coined by Henry VIII., and to sixpences later (compare teston); also, in modern slang, a sixpence.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. someone who administers a test to determine your qualifications
  • n. a flat canopy (especially one over a four-poster bed)


Middle English, from Medieval Latin testrum, from Late Latin testa, skull, from Latin, shell.
Alteration of teston.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Probably from Old French testre, from Latin testa. (Wiktionary)
From test +‎ -er. (Wiktionary)
For testern, teston, from French teston, from Old French teste the head, the head of the king being impressed upon the coin. See tester a covering, and compare testone, testoon. (Wiktionary)


  • This tester is a small 3 prong unit with 2 yellow lights and 1 red light, made by A.W. Sperry.

    How can I find? Where can I get?

  • … the word tester refers to the canopy, or roof, that shelters the bed and the alcove.

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  • Now, you've shown where MacNeill points out that the generator for biological evolution isn't random (or even random with regard to fitness), and the tester is not limited to natural selection.

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  • The Sperry outlet tester is pretty much the primary tester used NOB.

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  • I noted in the Edmunds report that my wife's car had experienced many of the same foibles as their long-term tester, including sagging kick panels, several NVH sins and interior panel gaps that were as uneven as rural highway pavement.

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  • Maybe we should talk to Cadillac about getting into a long-term tester with a similar theme.

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  • The seven times Tour de France champion was requested, while training in France, to provide urine, blood and hair samples to a tester from the French Anti-Doping Agency (AFLD).

  • To test this, you can use an inexpensive pig-tail electrical tester, which is available at any hardware store for about two dollars.

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  • The tester was our 23-month daughter, and we chose Spanish for her to learn.

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  • Our tester was a big fan of the pedicure, which included a foot massage and Jacuzzi bath.

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