Problem (6)
'problem' is the definition.
(a hitch is a problem or difficulty)
This is the entire clue.
(Other definitions for hitch that I've seen before include "Snag; tie up (animal)" , "Tether (rope); difficulty" , "To travel without paying" , "couple" , "Thumb (a lift)" .)
'problem' is the definition.
(poser is a kind of problem)
This is the entire clue.
(Other definitions for poser that I've seen before include "Problem set by the model" , "This person's affected" , "Question; one trying to impress" , "Tricky question" , "Puzzling question about ropes" .)
(Other definitions for nota that I've seen before include "... bene, NB" , "Ssssh!" .)
'problem' is the definition.
(snag can mean a problem or difficulty)
This is the entire clue.
(Other definitions for snag that I've seen before include "Minor difficulty" , "Hitch, obstacle" , "Catch - disadvantage" , "Temporary hold-up" , "Hidden obstacle or drawback" .)
'problem' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for teaser that I've seen before include "Conundrum" , "Difficult problem concerning Easter" , "One who irritates playfully" , "Hard question" , "Tricky question; intriguing preliminary advert" .)