From Longman Dictionary of Contemporary Englishdeflowerde‧flow‧er /ˌdiːˈflaʊə, dɪ- $ -ər/ verb [transitive] literary SEX/HAVE SEX WITHto have sex with a woman who has never had sex before→ See Verb table
Examples from the Corpus
deflower• He tenderly can deflower a virgin, endlessly pursue a stunning model and still have time for a few other dalliances.• In one scene three groupies make it their mission to deflower you. 