tub ‧ ing /ˈtjuːbɪŋ $ ˈtuː-/ BrE AmE noun [uncountable]
1 . tubes in general, especially when connected together into a system:
rubber tubing
2 . the activity of floating on a river on a large ↑ inner tube for fun
tub ‧ ing /ˈtjuːbɪŋ $ ˈtuː-/ BrE AmE noun [uncountable]
1 . tubes in general, especially when connected together into a system:
rubber tubing
2 . the activity of floating on a river on a large ↑ inner tube for fun
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012