Describe the figure of speech in the line:- 'Sleep that knits up the ravell'd sleeve of care'

In addition to the other editors' posts about
personification, Macbeth's quote in Act II, scene ii of
Macbeth is a metaphor (an analogy), and it is filled with two types
of imagery.

Metaphor /
Analogy: Translated, it means, "sleep that straightens out the tangled
coil of worry."  Macbeth and his wife have murdered Duncan and sleep, so Macbeth is
comparing the act of sleep to to the act of unravelling.  Sleep unravels worry the same
way a weaver unravels thread.  He will not sleep for the rest of the play; instead, he
will forever worry and be paranoid that someone or something supernatural will discover
his crime.

Imagery: the line
contains two types of imagery: "sleep" and "clothing."  The leitmotif of sleep runs
throughout the play.  The lack of sleep is a result of guilt, and it will drive both
Macbeth and Lady Macbeth crazy by the end of the
play.

Macbeth is also full of clothing
imagery: "borrowed robes," the "crown," and "the sleeve."  These images underscore the
domestic and gender differences between the couple.  Ironically, Macbeth makes an
analogy here about a feminine domestic duty (sewing).