1) Fistular 2) Fistulate 3) Hollow 4) Tubular 1) Passage 2) Passageway 3) Tubelike 4) Tubular 
• (a.) Hollow, like a pipe or reed; fistulose. • (a.) Having the form or nature of a fistula; as, a fistulous ulcer.
Having the form or nature of a fistula. ... (09 Oct 1997) ... 
(fis´tu-lәs) pertaining to or of the nature of a fistula.
Fis'tu·lous adjective [ Confer French fistuleux .] 1. Having the form or nature of a fistula; as, a fistulous ulcer. 2. Hollow, like a pipe or reed; fistulose. Lindley. 
Type: Term Pronunciation: fis′tyū-lŭs Definitions: 1. Relating to or containing a fistula.
fistulous 1. Of or resembling a fistula. 2. Tubular and hollow, as the leaves of a scallion. 3. Made of or containing tubular parts.
adjective of or pertaining to or resembling a fistula
pertaining to or resembling a fistula. · tubelike; tubular. · containing tubes or tubelike parts.