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English definition of “tester”

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tester

noun [C]  /ˈtes·tər/ us  
someone who tests something, esp. a new product: Our 11-year-old tester pronounced the gadget "very cool." A tester is also a device or machine that performs tests: a battery tester
Translations of “tester”
in Chinese (Traditional) 測試員, 試驗員, 測試器,測試儀…
in Chinese (Simplified) 测试员, 试验员, 测试器,测试仪…
(Definition of tester from the Cambridge Academic Content Dictionary © Cambridge University Press)
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