Tic (5)
'tic' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for spasm that I've seen before include "Painful muscle contraction" , "Fit" , "Jerk" , "sudden movement" , "Tic, sudden contraction" .)
'tic' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for twitch that I've seen before include "Nervous action" , "by implication, is to look for birds" , "Quiver spasmodically as in tic" , "Twinge" , "Uncontrolled, jerky motion" .)
'tic' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for jerk that I've seen before include "kind of lift in competition" , "Sudden tug" , "Yank, idiot" , "Stupid person" , "Pull suddenly - twerp!" .)