Lewis & Short

2. haustus, ūs, m. [haurio], a drawing.

  1. I. Lit.: aqua, quae non sit haustus profundi, Col. 1, 5, 1: puteus in tenues plantas facili diffunditur haustu, Juv. 3, 227; Mel. 2, 4, 4: aquae ductus, haustus, iter, actus, etc. … a jure civili sumitur, the right of drawing, * Cic. Caecin. 26, 74; Dig. 8, 3, 1: haustus ex fonte privato, ib. 8, 3, 3, § 3.
  2. II. Transf., a drinking, swallowing, drawing in; and concr., a drink, draught (poet. and in post-Aug. prose; for the most part only in the plur.): largos haustus e fontibu’ magnis Lingua fundet, Lucr. 1, 412; cf.: saepe, sed exiguis haustibus inde (i. e. rivo) bibi, in small draughts, Ov. F. 3, 274: haustu sparsus aquarum Ora fove, Verg. G. 4, 229: haustus aquae mihi nectar erit, Ov. M. 6, 356: undarum, Luc. 3, 345: Bacchi (i. e. vini) haustus, Ov. M. 7, 450: sanguinis, i. e. the stream, current, id. ib. 4, 118: Catulus se ignis haustu ludibrio hostium exemit, swallowing, Flor. 3, 21, 15: esse apibus partem divinae mentis et haustus Aetherios, i. e. breath, soul, Verg. G. 4, 220; cf.: alium domi esse caeli haustum, alium lucis aspectum, Curt. 5, 5: (canes) Suspensis teneros imitantur dentibus haustus, i. e. gentle snappings, Lucr. 5, 1068: peregrinae haustus arenae, a handful, Ov. M. 13, 526; cf.: angusti puero date pulveris haustus, Stat. Th. 10, 427; v. haurio.
    1. B. Trop.: Pindarici fontis qui non expalluit haustus, i. e. to drink from, to imitate, Hor. Ep. 1, 3, 10: justitiae haustus bibere, Quint. 12, 2, 31.