2)Constituting or consisting of tubes or a tube.
3) Shaped like a tube.
4) stolen from science by the surf culture and later by pop culture (in the 1980's).
5) see tubeular for more
6) of or relating to a good thing. See tubeular, supra.
b. "I got an 'A' on that basket weaving test." "tubular!"
Dave from a distance: "Hey dudes how are the waves? (Ganja)
man:"Hey man we're baked and Spongebob is on."