Lewis & Short

ăquārĭus, a, um, adj. [aqua]

  1. I. Of or relating to water: rota, for drawing water, Cato, R. R. 11, 3: vas, Varr L. L. 5, § 119 Müll.: provincia, i.e. Ostiensis, * Cic. Vatin. 5 al.
    Hence,
  2. II. Subst.
    1. A. ăquārĭus, ii, m.
      1. 1. A water-carrier: venit et conduc tus aquarius, Juv 6, 332.
      2. 2. A conduitmaster (in aqueducts, etc.), an inspector of the conduits or water-pipes: cum tabernariis et aquariis pugnare, Cael. ap. Cic. Fam. 8, 6, so, AQVARIVS AQVAE ANIONIS, Inscr. Orell. 3203.
      3. 3. The Water-bearer, one of the signs of the zodiac, Gr Ὑδροχόος: cervix Aquarī, Cic. Arat. 56; 172; 176: inversum contristat Aquarius annum, Hor. S. 1, 1, 36.
    2. B. ăquārĭum, ii, n., a wateringplace for cattle, Cato, R. R. 1, 3.