In verse drama, two consecutive lines that rhyme with each other, usually at the end of a scene or of a speech, like a closing that is fixed in memory.
In Hamlet
But I have that within which passeth show; / These but the trappings and the suits of woe.
The two lines rhyme on “show” and “woe” and close Hamlet’s speech with the air of a sentence. The rhyme stresses the distance between the grief felt, “within,” and the grief displayed.
Act I: The Ghost and the order of revenge, Hamlet, to Gertrude
The time is out of joint. O cursed spite / That ever I was born to set it right!
Act I: The Ghost and the order of revenge, Hamlet
The play's the thing / Wherein I'll catch the conscience of the King.
Act II: Feigned madness and the theater trap, Hamlet, alone
Subscription
The explanation of each passage, in every device and in every work, comes with a subscription.