Definition of "perdu" [per•du]

• Obsolete A soldier sent on an especially dangerous mission. (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.

• "What a pleasant morning's work it would be to unearth this gem from its dark corner, where it has lain perdu so many years!"
• "Of course Walter meant "perdu" -- lost -- but his French is awfully risqué."
• "M.] 133 A la terre perdue, tout fut perdu, is the vigorous expression of the Assise, (c."