A reliable, uncomplaining, often hard-working person.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "trouper" in a sentence
"The piece called "the old trouper" is a good example of how smoothly the combination worked."
"Ahem --- that's "trouper" and I'm sure JEN would never make that slip!"
"The expression is "trouper" as in part of the acting troupe ... not a trooper like part of a battalion ..."