Pipe (4)
'pipe' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for tube that I've seen before include "London Underground or long cylinder" , "Pipe (with trains?)" , "Pipe - railway" , "channel" , "Transport system" .)
'pipe' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for hose that I've seen before include "Piping" , "Stockings; drench" , "One with doublet; a tube" , "Socks and stockings" , "Flexible tube for liquid" .)
'pipe' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for conduit that I've seen before include "Channel for wiring" , "Channel for conveying liquids" , "Passage through which water or electric wires can pass" , "Channel for conveying liquid" , "Pipe for fluid - means of access" .)