Parcels of land (5)
(Other definitions for plots that I've seen before include "Stories in novels or plays" , "Schemes" , "Conspires" , "Plans" .)
(Other definitions for acres that I've seen before include "Extensive landed property (often rolling)" , "may burden landed folk" , "Areas of 4840 square yards" , "The Phoenix Park has 40 of them (5)" , "Scare (anag)" .)
'parcels of land' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tracts that I've seen before include "Large areas of land or small pamphlets" , "Expanses of land or pamphlets" , "Big areas of land or small pamphlets" , "Extended areas of land" , "leaflets" .)