noun

• trying something to find out about it
  "a sample for ten days free trial"
• any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc
  "the test was standardized on a large sample of students"
• a set of questions or exercises evaluating skill or knowledge
  "when the test was stolen the professor had to make a new set of questions"
• the act of undergoing testing
  "he survived the great test of battle"

verb

• put to the test, as for its quality, or give experimental use to
  "This approach has been tried with good results"
• test or examine for the presence of disease or infection
  "screen the blood for the HIV virus"
• examine someone's knowledge of something
  "The teacher tests us every week"
• show a certain characteristic when tested
  "He tested positive for HIV"