Contemporary lament (3)
I believe the answer is:
doh
'contemporary lament' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for doh that I've seen before include "acknowledgment of stupidity" , "Homer Simpson's exasperated cry" , "How foolish of me" , "Note; exclamation" , "First note of tonic sol-fa scale" .)