Question

What figure(s) of speech is (are) used in these lines from a poem about a young horse?
And we saw him, or thought we saw
him, dim and gray, Like a shadow against the curtain of falling flakes.
From “The Runaway” by Robert Frost

Answer 1

Simile and imagery. I've had this before, but in case you don't know what imagery is or haven't learned it, don't say it.