(1):

(n.) The severing or sequestering of a benefice to the perpetual use of a spiritual corporation. Blackstone.

(2):

(n.) The act of setting apart or assigning to a particular use or person, or of taking to one's self, in exclusion of all others; application to a special use or purpose, as of a piece of ground for a park, or of money to carry out some object.

(3):

(n.) Anything, especially money, thus set apart.

(4):

(n.) The application of payment of money by a debtor to his creditor, to one of several debts which are due from the former to the latter.