gres (chelebh, "fat," "suet"): The word occurs once in the metaphorical sense "prosperous," then dull, gross, brutal: "Their heart is as fat as grease" (Ps 119:70; compare Isa 6:10, and see FAT).
The International Standard Bible Encyclopedia
Grease
The International Standard Bible Encyclopedia, James Orr (1915). Public domain, from the CrossWire SWORD module.