Definition of demises:
(n) :
(countable) Death; decease.
(n) :
(countable) The end of something, in a negative sense; downfall.
(v) :
(intransitive) To die.
(n) :
(law) The conveyance or transfer of an estate, either in fee for life or for years, most commonly the latter.
(n) :
Transmission by formal act or conveyance to an heir or successor; transference; especially, the transfer or transmission of the crown or royal authority to a successor.
(v) :
(transitive, law) To convey, as by will or lease.