Item of cutlery first mentioned in a nonsense poem (8,5)
I believe the answer is:
runcible spoon
(Other definitions for runcible spoon that I've seen before include "Edward Lear's fork" , "Lear's implement" , "Newlyweds' odd utensil" , "tool for dealing with 1 [QUINCE]" , "Curved fork with three prongs" .)