Amphibian whose eye is in a "Macbeth" recipe (4)

I believe the answer is:

newt

(Other definitions for newt that I've seen before include "found in pond!" , "Went to find amphibian" , "Small tailed amphibian" , "Went to find kind of water lizard" , "Garden-pond amphibian" .)

I've seen this clue in the Universal.

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