FISTULOUS
fistular, fistulate, fistulous
(adjective) hollow and tube-shaped like a reed
fistulous
(adjective) of or pertaining to or resembling a fistula
Source: WordNet® 3.1
Etymology
Adjective
fistulous (comparative more fistulous, superlative most fistulous)
Of or pertaining to a fistula
Resembling a reed; hollow and tubular
Source: Wiktionary
Fis"tu*lous, a. Etym: [Cf. F. fistuleux.]
1. Having the form or nature of a fistula; as, a fistulous ulcer.
2. Hollow, like a pipe or reed; fistulose. Lindley.
Source: Webster’s Unabridged Dictionary 1913 Edition