Lewis & Short

sentīno, āre, v. n. [sentina].

  1. I. Lit., to bail or pump out the bilge-water from a ship (late Lat.), Paul. Nol. Ep. 36 init.; Aug. Homil. 42.
  2. * II. Trop., to be in difficulty or danger: sentinare, satagere, dictum a sentinā, quia multum aquae navis cum recipit periclitatur, Fest. p. 339 Müll.; Caecil. ib.