In software development: a person responsible for performing tests on the software being produced. The responsibilities of a tester can include writing the test cases or scripts used for testing the functionality and performance of the system.

tester

A sixpence: from teston, a coin with a head on it.

The 1811 Dictionary of the Vulgar Tongue.

Tes"ter (?), n. [OE. testere a headpiece, helmet, OF. testiere, F. tetiere a head covering, fr. OF. teste the head, F. tete, fr. L. testa an earthen pot, the skull. See Test a cupel, and cf. Testiere.]

1.

A headpiece; a helmet.

[Obs.]

The shields bright, testers, and trappures. Chaucer.

2.

A flat canopy, as over a pulpit or tomb.

Oxf. Gross.

3.

A canopy over a bed, supported by the bedposts.

No testers to the bed, and the saddles and portmanteaus heaped on me to keep off the cold. Walpole.

 

© Webster 1913.


Tes"ter, n. [For testern, teston, fr. F. teston, fr. OF. teste the head, the head of the king being impressed upon the coin. See Tester a covering, and cf. Testone, Testoon.]

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.

Shak.

 

© Webster 1913.

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