fistular

from The Century Dictionary.

• Fistulous.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Hollow and cylindrical, like a pipe or reed.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Tube-like; resembling a hollow cylinder; like a pipe; (or having parts of this form).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective hollow and tube-shaped like a reed