Slow, old horse
I believe the answer is:
nag
(Other definitions for nag that I've seen before include "Worry; old horse" , "Old horse or shrewish wife" , "Complaint" , "Badger with constant complaints" , "old trout?" .)
I believe the answer is:
nag
(Other definitions for nag that I've seen before include "Worry; old horse" , "Old horse or shrewish wife" , "Complaint" , "Badger with constant complaints" , "old trout?" .)