What you may do to your thumbs (7)
I believe the answer is:
twiddle
(Other definitions for twiddle that I've seen before include "Play with (one's thumbs)" , "Jiggle" , "Play with and twist around" , "Twirl and fiddle" , "Adjust" .)
I believe the answer is:
twiddle
(Other definitions for twiddle that I've seen before include "Play with (one's thumbs)" , "Jiggle" , "Play with and twist around" , "Twirl and fiddle" , "Adjust" .)