Meaning

• A sum or source of money.

  "a fund for the maintenance of underprivileged students"

• An organization managing such money.

• A money-management operation, such as a mutual fund.

  "Several major funds were declared insolvent recently."

• A large supply of something to be drawn upon.

  "He drew on his immense fund of knowledge."

Meaning

• To pay for.

  "He used his inheritance to fund his gambling addiction."

• To place (money) in a fund.

• To form a debt into a stock charged with interest.