Pieces of land, possibly one less (5)
I believe the answer is:
isles
'pieces of land' is the definition.
The definition and answer can be both natural objects as well as being plural nouns.
Maybe they are linked in a way I don't understand?
'possibly one less' is the wordplay.
'possibly' indicates an anagram.
'one' becomes 'i' (Roman numeral).
'i'+'less'='iless'
'iless' is an anagram of 'ISLES'.
Can you help me to learn more?
(Other definitions for isles that I've seen before include "Eyots" , "Hebrides, for example" , "Islands" , "The road to these is a wellknown Scottish song" , "Hebrides, perhaps" .)