ˈt(y)übiŋ, -bēŋ noun
( -s )
Etymology: tube (I) + -ing
1.
a. : material in the form of a tube : a length or piece of tube
rubber tubing
a roll of copper tubing
as
(1) : tubular fabric
(2) : a special grade of high-test pipe fitted with threads and couplings of special design
b. : a series of tubes : the tubes of a particular system or apparatus
renewed the tubing of the boiler
2.
[from gerund of tube (II) ]
: the act or an instance of making or installing tubes