Spice holder (4)
I believe the answer is:
'spice holder' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rack that I've seen before include "Cogged rail; (lamb) joint" , "Framework for hanging things on" , "Garlic mayonnaise" , "Place of torture" , "Rib section of lamb" .)