Astrol. Obs. [Arab. al-naṭḥ from naṭaḥa to butt, aim at with the horns.] The first star in the horns of Aries; hence, the first mansion of the moon.
c. 1386. Chaucer, Frankl. T., 553. He knew ful wel how fer Alnath was shoue ffro the heed of thilke fixe Aries aboue.