Endowment may refer to many things:

Finance

• Financial endowment; relating to funds or property donated to institutions or individuals.
• Endowment (Life insurance); payment of the face value of a life insurance policy, usually at age 98-120.
• Endowment mortgage; a mortgage to be repaid by an endowment policy.
• Endowment policy; a life assurance policy designed to build a capital sum at a pre-determined date.

Other

• Endowment (Philosophy); as a philosophical term
• Endowment (Mormonism); a special gift of heavenly priesthood power, connected with the construction and use of the Mormon temple.
• Endowment can also be a term used for reclaimed land
• Slang for the size of a man's penis, or a woman's bust See also Human penis size