Lewis & Short

fistŭlātus, a, um, adj. [fistula] (postAug.).

  1. I. Furnished with pipes: tabulae, Suet. Ner. 31 Oud. N. cr.
  2. II. Pipe-shaped: venae, Arn. 2, 84: aera, Sid. Ep. 9, 13 Carm. 4.