Strong's #6309: peder (pronounced peh'der)
 from an unused root meaning to be greasy; suet:--fat.
Brown-Driver-Briggs Hebrew Lexicon:
 ּ 
  peder 
 
 1) fat, suet
 
  Part of Speech: noun masculine
Relation: from an unused root meaning to be greasy
Usage:
This word is used 3 times:
Leviticus 1:8: "the parts, the head,  and the fat, in order upon the wood that is on"
Leviticus 1:12: "it into his pieces, with his head  and his fat: and the priest shall lay them in order on"
Leviticus 8:20: "the head, and the pieces,  and the fat."