metre

noun
  1. The fundamental unit of length in the metric system, equal to 100 centimeters or approximately 39.37 inches. noun
    The swimming pool is 25 metres long.
    He ran a hundred metres in under 12 seconds.
  2. The rhythmic structure of a verse or lines in poetry, determined by the number and length of feet in a line. noun
    The poem is written in iambic metre.
    Understanding the metre of a poem can enhance its reading.