Albatross, metaphorically (4)
I believe the answer is:
onus
(Other definitions for onus that I've seen before include "Liability" , "Burden, duty" , "'Responsibility, task or burden (4)'" , "Weight of responsibility" , "Encumbrance" .)
I believe the answer is:
onus
(Other definitions for onus that I've seen before include "Liability" , "Burden, duty" , "'Responsibility, task or burden (4)'" , "Weight of responsibility" , "Encumbrance" .)