Wiktionary
iron hoof
n. (context Cockney rhyming slang English) A poof (gloss: a male homosexual).
Usage examples of "iron hoof".
The open forges of armorer and smithy smoked and hissed, and the din of hammer on anvil rose above the thousand lesser noises of the castle courts, the shouting of commands, the rattle of steel, the ringing of iron hoof on stone flags, as these artificers hastened, sweating and cursing, through the eleventh hour repairs to armor, lance and sword, or to reset a shoe upon a refractory, plunging beast.
When not in use the horse takes the form of a cane with an iron horse head at the top and an iron hoof at the bottom.
No: for the iron hoof, as the poet calls it, rang upon the paved road.