a worn-out idea or overused expression
a common meter in poetry consisting of an unrhymed line with five feet or accents, each foot containing an unaccented syllable and an accented syllable
a unit of poetic meter (usually one stressed and one or two unstressed syllables). These terms are used for the metric feet and line lengths most common in English poetry:
A figure of speech in which a part is used for the whole (as hand for sailor), the whole for a part (as the law for police officer), the specific for the general (as cutthroat for assassin), the general for the specific (as thief for pickpocket), or the material for the thing made from it (as steel for sword).