as if it's just fallen from a table,
cups her fetlock and bends,
a romantic lead dropping to the lips of his lover.
Then the close work begins: cutting moon-sliver clippings,
excavating the arrow head of her frog,
filing at the sole and branding on a shoe
in an apparition of smoke,
three nails gritted between his teeth,
a seamstress pinning the dress of the bride.
Placing his tools in their beds,
he gives her a slap and watches her leave,
awkward in her new shoes, walking on strange ground.
The sound of his steel, biting at her heels.
The poem ends with the farrier’s ‘superiority’ and power expressed in the aggressive ‘biting at her heels’, a metaphor sometimes used to mean nasty little jibes or attacks. It is as if the farrier needs, finally, to assert his dominance. 
 Note that the two clauses relating to ‘sound’ and ‘biting’ are a mix of senses, an example of  synaesthesia . The farrier asserts himself in two different but combined ways.
The Farrier