Natal Day, the day of a person's birth. The word nativity is chiefly used in speaking of the saints; as, the nativity of St John the Baptist, &c. But when we say the Nativity, it is understood of that of Jesus Christ, or the feast of Christmas.

Nativity, nativitas, in ancient law books, signifies bondage or servitude.

Astrology, the theme or figure of the heavens, and particularly of the twelve houses, at the moment when a person was born; called also the horoscope.

Calculating the nativity, or by calculation seeking to know how long the queen should live, &c. was made felony, an. 23 Eliz. c. 2.

Nativo habendo, in Law, a writ directed to the heir, for a lord who claimed inheritance in any villain, when a villain was run away from him, for the apprehending and restoring him to the lord.

Natrix, in Natural History, a name given by some old writers to the natrix.