Over hill, Over dale
The rhyme scheme is: ABABCCDDEEFFGG
Every line rhymes with at least one other line
What the poet was saying when he wrote this poem was that he is wandering all over the place. He's also saying that he walks faster than anything else. Then he says that he serves the fairy queen, and that he makes it dew on all the plants and flowers.
I've gone on long walks thru the hills, and looked at all sorts of things like creeks, deer, flowers, and other plants. Also, I've seen dew in the morning on all the plants.
Over hill, over dale,
Thorough bush, thorough brier,
Over park, over pale,
Thorough flood, thorough fire,
I do wander everywhere,
Swifter than the moon's sphere;
And I serve the fairy queen,
To dew her drops upon the green:
The cowslips tall her pensioners be;
In their gold coats spots you see;
Those be rubies, fairy favors,
In those freckles live their savors;
I must go seek some dew-drops here,
And hang a pearl in every cowslip's ear.
-William Shakespear