Meaning of “test” - Learner’s Dictionary

test

noun [ C ] uk us /test/
EXAM

A1 a set of questions to measure someone's knowledge or ability:

a driving test
You have to take a test.
Only two students in the class failed the test.
Did you pass the biology test?
MEDICAL

B1 a short medical examination of part of your body:

an eye test
a pregnancy test
EXPERIMENT

something that you do to discover if something is safe, works correctly, etc:

a safety test
SITUATION

B2 a situation that shows how good something is:

This will be a real test of his ability.

(Definition of “test noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)