Yearn for dance party after second of October (5)
I believe the answer is:
crave
'yearn for' is the definition.
(I've seen this before)
'dance party after second of october' is the wordplay.
'dance party' becomes 'rave' (rave is a type of dance event).
'after' says to put letters next to each other.
'second of october' becomes 'c' (2nd letter of 'october').
'rave' put after 'c' is 'CRAVE'.
(Other definitions for crave that I've seen before include "Beg; long for" , "need, desperately" , "Really want" , "Hunger for" , "Have strong desire for, or beg as for mercy" .)