Lewis & Short

trībŭlōsus, a, um, adj. [tribulus].

  1. I. Lit., full of thorns or thistles (late Lat.): voragines viarum, Sid. Ep. 3, 2 fin.
  2. II. Trop., thorny, rough: opus, Sid. Ep. 4, 3.
    Sup.: tribulosissima dissimulatio, Sid. Ep. 1, 7 med.