Definition: Visually descriptive writing that uses one of the five senses.
Example:
The turquoise pool rose up to meet us,
its slide a silver afterthought down which
we plunged, screaming, into a mirage of bubbles.
We did not exist beyond the gaze of a boy.
Shaking water off our limbs, we lifted
up from ladder rungs across the fern-cool
lip of rim. Afternoon. Oiled and sated,
we sunbathed, rose and paraded the concrete,
danced to the low beat of "Duke of Earl".
Past cherry colas, hot-dogs, Dreamsicles,
we came to the counter where bees staggered
into root beer cups and drowned. We gobbled
cotton candy torches, sweet as furtive kisses,
shared on benches beneath summer shadows.
Cherry. Elm. Sycamore. We spread our chenille
blankets across grass, pressed radios to our ears,
mouthing the old words, then loosened
thin bikini straps and rubbed baby oil with iodine
across sunburned shoulders, tossing a glance
through the chain link at an improbable world.
In this poem, I can smell chlorine, cotton candy, and sunscreen. I also see girls having fun at the pool.
Signficance: The signficance of imagery is great because it allows you to clearly see, hear, smell, touch, and taste what's going on in the poem. Imagery helps you clearly picture and imagine the poem in your mind.
Definition: The rhythmic structure or patterns of lines in a verse. 
