Plagiarism is defined by dictionary.com as
"an act or instance of using or closely imitating the language and thoughts of another author without authorization and the representation of that author's work as one's own, as by not crediting the original author."
The ramifications for committing plagiarism would include a zero for the work and possibly an F for the course. In the Student Handbook, it falls under the category of "Academic Dishonesty" and can result in probation and even more serious consequences for repeat offenders.