Definitions of test:

• noun:   the act of testing something
• noun:   the act of undergoing testing

  Example: "He survived the great test of battle"

• noun:   any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc

  Example: "The test was standardized on a large sample of students"

• noun:   a hard outer covering as of some amoebas and sea urchins
• noun:   trying something to find out about it
• noun:   a set of questions or exercises evaluating skill or knowledge

  Example: "When the test was stolen the professor had to make a new set of questions"

• verb:   put to the test, as for its quality, or give experimental use to

  Example: "Test this recipe"

• verb:   show a certain characteristic when tested

  Example: "He tested positive for HIV"

• verb:   undergo a test

  Example: "She doesn't test well"

• verb:   determine the presence or properties of (a substance)
• verb:   achieve a certain score or rating on a test

  Example: "She tested high on the LSAT and was admitted to all the good law schools"

• verb:   test or examine for the presence of disease or infection
• verb:   examine someone's knowledge of something

  Example: "The teacher tests us every week"

• name:  A surname (very rare: popularity rank in the U.S.: #19404)