Hard to move; drunk (5)
I believe the answer is:
tight
This clue is a double definition.
'hard to move' is the first definition.
(I've seen this before)
'drunk' is the second definition.
(slang term)
(Other definitions for tight that I've seen before include "It's not enough" , "Secretive, drunk (colloq.)" , "Miserly (informal) - drunk (informal)" , "Stretched" , "affected by powerful liquid?" .)