Lewis & Short

per-pōto, āvi, 1, v. a. and n.

  1. I. To drink or tipple without intermission, to keep up a carouse: postquam ejus hinc pater sit profectus peregre, tum perpotasse adsiduo, Plaut. Most. 4, 2, 60; id. Ps. 2, 6, 13: totos dies, Cic. Verr. 2, 5, 33, § 87; cf. id. ib. 2, 5, 38, § 100: perpotavit ad vesperum, id. Phil. 2, 31, 77: perpotandi dulcedo, Curt. 6, 2, 2.
  2. * II. To drink off: amarum Absinthi laticem, Lucr. 1, 940.