PRESERVE

(SEPARATE ACTIVITY) [noun] [C] - an activity which only one person or a particular type of person does or is responsible for, or something belonging to or used by only one person or a limited number of peopleOwning racehorses is the preserve of (= only done by) the rich.The gardening is Jo's preserve (= responsibility).You'll have to ask the accounts department about invoices - that's not my preserve (= responsibility).She regards that cupboard as her own preserve (= belonging to her) and no-one else is allowed to use it.