per·du or per·due 
(pər-d, -dy)
(pər-d, -dy)n.
Obsolete
Obsolete
A soldier sent on an especially dangerous mission.
[French perdu, masculine past participle, and perdue, feminine past participle (as in sentinelle perdue, lost sentry, sentry posted in a position in which death is likely) of perdre, to lose, from Latin perdere; see PERDITION.]