The "Gras" of "Mardi Gras" (3)

I believe the answer is:

fat

(Other definitions for fat that I've seen before include "eg Lard" , "Obese, overweight" , "Obese, having spare tyre etc" , "and 24: Overpaid City type" , "Greasy substance" .)

I've seen this clue in the LA Times.

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