n., pl., sergeants first class.
- (Abbr. SFC) A noncommissioned rank in the U.S. Army that is above staff sergeant and below master sergeant.
- One who holds this rank.
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.