The meaning and definition of invest What does invest mean?
1. to put (money) to use, by purchase or expenditure, in something offering potential profitable returns, as interest, income, or appreciation in value.
2. to use (money), as in accumulating something: to invest large sums in books.
3. to use, give, or devote (time, talent, etc.), as for a purpose or to achieve something: He invested a lot of time in helping retarded children.
4. to furnish with power, authority, rank, etc.: The constitution invests the president with the power of veto.
5. to furnish or endow with a power, right, etc.; vest: Feudalism invested the lords with absolute authority over their vassals.
http://dictionary.reference.com/browse/invest