Naked legend covered elbow (5)
I believe the answer is:
nudge
'elbow' is the definition.
(I know that elbow is a kind of nudge)
'naked legend covered' is the wordplay.
'naked' becomes 'nude' (synonyms).
'legend' becomes 'g' (leg-end - end letter of 'leg').
'covered' indicates putting letters inside.
'nude' going around 'g' is 'NUDGE'.
(Other definitions for nudge that I've seen before include "suggestive move" , "Remind (with the elbow?)" , "Give a reminder" , "Encouraging prompt" , "Prod gently with elbow" .)