The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
See grenadier.adjective also rat·tailed or rat·tail
Shaped like or having a part shaped like a rat's tail: a rat-tail file; a rattail comb.