"arm"

This is a reversal clue - look for indicators like 'back', 'returned', 'up' (in down clues), or 'west' (in across clues)

Join the wordplay parts together in sequence

Answer: FROSTY | Definition: 'arm' | Wordplay: FRO=”back” (as in ‘to-and-fro’) plus STY=”home [of some animals] at the farm”