Meter is a unit of rhythm in poetry. It refers to the organization of stressed and unstressed syllables in a verse, or within the lines of a poem.
There are different types of meter. The most common is the Iambic metter, in which an unstressed syllable is followed by a stressed syllable. The Trochee meter is the exact opposit: a stressed syllable followed by an unstressed sylable.
Other examples are the Dactyl Meter, which has one stressed syllable followed by two unstressed ones; and the Anapest Meter, which has two unaccented syllables followed by an accented one.
