Part of Plymouth, miles away from home (3)
I believe the answer is:
hoe
'part of plymouth' is the definition.
(the Hoe is a public space in Plymouth)
'miles away from home' is the wordplay.
'miles' becomes 'm' (common abbreviation).
'away from' indicates named letters should be taken away.
'home' with 'm' taken away is 'HOE'.
(Other definitions for hoe that I've seen before include "Romanians (anag) -- European enclave" , "Weeding tool" , "gardening implement" , "Garden tool for scraping up weeds" , "Tool for loosening soil and scraping up weeds" .)