verb

• (transitive) To give property to (someone) as a gift; specifically, to provide (a person or institution) with support in the form of a permanent fund of money or other benefits.
  "His [John, King of England's] Acts and Orders for the VVeale-publike vvere beyond moſt: hee being either the firſt, or the chiefeſt, vvho appointed thoſe noble Formes of Ciuill gouernement in London, and moſt Cities, and Incorporate Tovvnes of England, endovving them alſo vvith their greateſt Franchiſes; […]"
• (transitive, followed by with, or rarely by of) To enrich or furnish with some faculty or quality.
  "Wherby we bith lerned þat it shalnot only be goode to owre prince, but also to vs selff, that he be well indowed; ffor ellis the patriarke wolde not haue made such a trety."
• (transitive, usually in the passive voice) To naturally furnish (with something).
  "She was endowed with a beautiful voice."
• (transitive, archaic or obsolete) To provide with a dower (“the portion that a widow receives from her deceased husband's property”) or a dowry (“property given to a bride”).
  "And if a man entice a maide that is not betrothed, and lie with her, he ſhall ſurely endow her to be his wife. If her father utterly refuſe to giue her vnto him, he ſhall pay money according to the dowrie of virgins."