Dance with member, Oscar (5)
I believe the answer is:
limbo
'dance' is the definition.
(I've seen this before)
'with member oscar' is the wordplay.
'with' says to put letters next to each other.
'member' becomes 'limb' (limb is a kind of member**).
'oscar' becomes 'o' (phonetic alphabet: alpha, bravo, charlie etc.).
'limb'+'o' is 'LIMBO'.
(Other definitions for limbo that I've seen before include "West Indian pole dancing" , "Unsettled state" , "Period of uncertainty" , "In medieval theology, heavenly abode for the unbaptised" , "Where things are unused or forgotten" .)