Held (9)
'held' is the definition.
('maintain' can be a synonym of 'hold')
This is the entire clue.
(Other definitions for maintained that I've seen before include "Kept up (level)" , "being kept going" , "Declared; supported" , "Sustained" , "Insisted" .)
'held' is the definition.
('contain' can be a synonym of 'hold')
This is all the clue.
(Other definitions for contained that I've seen before include "Enclosed" , "Checked" , "Held in" .)