ASSONANCE

Definition : the pattern of the vowels that are repeating in the end of words

Examples : 

And frightful a nightfall folded rueful a day

Nor rescue, only rocket and lightship, shone,      

And lives at last were washing away:

To the shrouds they took,—they shook in the hurling and horrible airs. 

Is out with it! Oh,      

We lash with the best or worst   

Word last! How a lush-kept plush-capped sloe      

Will, mouthed to flesh-burst,

Gush!—flush the man, the being with it, sour or sweet,

Brim, in a flash, full!—Hither then, last or first 

Significance : Assonance are the almost the same as alliteration except for the part ending and beginning. Reading assonance poems could be as fun as reading alliteration, although it's sometimes pretty hard to recognise the rhyming part at the end more than at the beginning.