Trochaic septenarius

A trochaic septenarius is a kind of poem that has seven sections, called "feet." Each foot has two syllables, and the first syllable is "stressed," or said a little louder than the second syllable. This gives the poem a bouncy, rhythmic feeling when it is read out loud.

So when we say "trochaic septenarius," what we really mean is a poem with seven bouncy sections, where each section has two syllables that go "ba-BOOM." It's kind of like a song or a chant that you can clap along to!