In The Odyssey, one epithet is "when rosy fingered dawn appeared." What type of figure of speech is this?

Consider what this expression does to dawn. What is the
expression "rosy fingered dawn" giving to dawn? Hopefully you should be thinking that it
is giving it human characteristics, by referring to the "fingers" of dawn. Thus we can
say that this figure of speech is an example of personification. Of course, in the Greek
world vision, Dawn in a sense was personfied anyway as a Goddess who brought morning
into being, so perhaps this helps us to understand the way that dawn is personfied
throughout this great epic classic.

However, just to remind
you, personification is a figure of speech where an inanimate object is given human
characteristics, in either actions or appearance. Note how the "rosy fingers" perhaps
refer to the effect on the sky as the sun rises and how beautiful patterns
appear.