donor
n. countablen. a person or group that gives something for free to help others. This can be money for a charity or part of their body, like blood, to help a sick person.
n. a person, group, or organization that provides a gift, such as money, blood, or an organ, for a charitable or medical purpose.
The hospital needs more blood donors.
An anonymous donor gave one million dollars to the local library to fund the new children's wing.
The success of the organ transplant depends heavily on the compatibility between the donor and the recipient to prevent the immune system from rejecting the new tissue.
From Middle English donoure, donour; from Anglo-Norman donour, from Old French doneur (See French donneur).
Often used with 'of' to specify the gift, such as 'donor of funds' or 'donor of organs'.