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v. flunked, flunk·ing, flunks
To fail, especially in a course or an examination.
a. To fail (an examination or course).
b. To give a failing grade to (a student).
2. To fail (a drug test, as for a performance enhancing substance).
1. A failure.
2. A failing grade.
To expel or be expelled from a school or course because of work that does not meet required standards.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.