Third-person singular simple present indicative form of rule.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "rules" in a sentence
"In it Rawls distinguished between what he called the ˜summary™ conception of rules, in which rules are merely ˜rules of thumb™ i.e., guides to behavior based on reports of prior actions and their outcomes, and the"
"It would have been a great help: but still it is not indispensable: after all, it is only the putting into rules of the way in which _every_ mind proceeds, when it draws valid conclusions; and, by practice in careful thinking, you may get to know "fallacies" when you meet with them, without knowing the formal _rules_."
"I suppose I should read rules or something .. * off to look for rules*"