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tester

1 ENTRIES FOUND:
tester /ˈtɛstɚ/ noun
plural testers
tester
/ˈtɛstɚ/
noun
plural testers
Britannica Dictionary definition of TESTER
[count]
: a person or device that tests something
: a container of perfume, lotion, etc., in a store that customers can use to try the product