hollow
canalicular
canaliculate
cannular
capillary
fistular
fistuliform
fistulose
fistulous
pipy
tubate
tube-shaped
tubiform
tubuliform
tubulose
tubulous
vasiform
tubularity
tubularly
adjacent
aluminum
bony
concentric
conical
cylindrical
flexible
globular
outer
rectangular
right-hand
shiny
skeletal
stubby
upright
vertical
wooden