A pattern, a way of doing something, especially (now often derogatory) a pattern of thought, a system of beliefs, a conceptual framework.
An example serving as the model for such a pattern.
A set of all forms which contain a common element, especially the set of all inflectional forms of a word or a particular grammatical category.
A measuring rod thirty-six inches (one yard) long.
A standard to which other measurements or comparisons are judged.