Longman Dictionary of Contemporary English
Wiktionary
n. date rape
Wikipedia
Acquaintance rape is rape that is perpetrated by a person who is known to the victim. Examples of acquaintances include someone the victim is dating, a classmate, co-worker, employer, family member, spouse, counselor, therapist, religious official or medical doctor. Acquaintance rape includes a subcategory of incidents labeled date rape that involves people who are in romantic or sexual relationships with each other. When a rape is perpetrated by a college student on another student, the term campus rape is sometimes used.
Most rapes are perpetrated by a person known to the victim, however, it is less likely to be reported than stranger rape and thus crime statistics often underestimate the prevalence of acquaintance rape compared to national surveys. From the legal perspective, the legal consequences of acquaintance rape is the same as for stranger rape.