Internal rhyme
In poetry, internal rhyme, or middle rhyme, is rhyme that occurs within a single line of verse, or between internal phrases across multiple lines. By contrast, rhyme between line endings is known as end rhyme.
Examples
Percy Dearmer (1867-1936) revised John Bunyan's (1628-1688) poem "To Be a Pilgrim" in 1906. It became a popular hymn when Canon Charles Winfred Douglas (1867-1944) set it to music in 1917. Here are Dearmer's lyrics, with the internal rhymes in bold. Notice that in these three quatrains the internal rhymes are also echoed in the line rhymes (also in bold).
He who would valiant be ’gainst all disaster,
Let him in constancy follow the Master.
There’s no discouragement shall make him once relent
His first avowed intent to be a pilgrim.
Who so beset him round with dismal stories
Do but themselves confound—his strength the more is.
No foes shall stay his might; though he with giants fight,
He will make good his right to be a pilgrim.
Since, Lord, Thou dost defend us with Thy Spirit,
We know we at the end, shall life inherit.
Then fancies flee away! I’ll fear not what men say,
I’ll labor night and day to be a pilgrim.