Ear of maize (7)
I believe the answer is:
corncob
'ear of maize' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for corncob that I've seen before include "Off which maize is eaten" , "Woody core of maize" , "Middle of ear" , "Bit of maize" , "Head of maize" .)