I. ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
1. : a book containing copies (as of accounts)
2. : a book formerly used in elementary schools containing samples of penmanship (as in the form of proverbs or moral precepts) for the learner to imitate
II. adjective
: characterized by conventionality or triteness
old-fashioned standards of morality and copybook virtues — Lucius Garvin
copybook maxims