What is "vested legacy"

Vested \Vest"ed\, a.

1. Clothed; robed; wearing vestments. ``The vested priest.''
   --Milton.

2. (Law) Not in a state of contingency or suspension; fixed; as, vested rights; vested interests.

   Vested legacy (Law), a legacy the right to which commences in pr[ae]senti, and does not depend on a contingency; as, a legacy to one to be paid when he attains to twenty-one years of age is a vested legacy, and if the legatee dies before the testator, his representative shall receive it.
   --Blackstone.

   Vested remainder (Law), an estate settled, to remain to a determined person, after the particular estate is spent.
   --Blackstone.
   --Kent.