n.
The hard fatty tissues around the kidneys of cattle and sheep, used in cooking and for making tallow.
[Middle English, from Anglo-Norman *suet, accusative of sue, tallow, variant of Old French sieu, from Latin sēbum.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.