Parts of body more than twice as long as hands (4)
I believe the answer is:
feet
'parts' is the definition.
(foot is a kind of part)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for feet that I've seen before include "Body parts; lengths" , "On which we stand" , "Metrical units" , "Paws" , "Have both on the ground to be practical" .)