"I myself will hunt this wolf to death" (Shakespear)
It's a metaphor, because the speaker calls a man a wolf.
"The shadow of a smile"
There are also so-called "dead" metaphors, they denote mostly things, like "a leg of a chair". Such phrases are sometimes taken for metonymies (a figure of speech consisting of the use of the name of one thing for that of another of which it is an attribute or with which it is associated), like: "one more cup, please" (the speaker wants a cup of tea or coffee, the contents, not the form). There are many types of metonymies, another one is where the name of work of art is replaced by the name of the author: "I've bought two Rembrandts" (meaning two pictures).