Any poetry that employs a regular, recognizable meter and rhythmic pattern; e.g., an entire poem written in iambic pentameter (blank verse) or anapestic tetrameter.; Verse that uses a formal, structured meter like the heroic couplet (rhymed iambic pentameter) to give it a musical, predictable quality.; Poetry where the arrangement of stressed and unstressed syllables follows a deliberate and measured pattern, such as haiku or tanka with their fixed syllable counts.; A poem that uses a traditional form (like the sonnet or villanelle) that demands a consistent meter and rhythmic regularity.