The initial informational-interview type meeting with someone met through an online dating service.
Typically involves a drink, right after work, during the week. Sometimes this psuedo-date can carry over into dinner if both parties are interested.
Fifi is getting tired of the same ol'pre-date format. She'd rather take a walk in the park.
Not quite a date, where you go out with a person you might be interested in dating and they're totally interested (or vice versa), that you've previously met during an activity where you maybe weren't yourself (e.g. a waitress from a bar where you were totally hammered). A pre-date will normally occur at a location of one of the parties choice (generally the less interested one) where there are other people they know close by, in case the other person turns out to be a psycho (e.g. a serial rapist or axe murderer). First date activities can still happen on a pre-date (e.g. flirting, makeout, OTPHJ, etc.), but the date definitely does not count in any running total and will leave at least one of the parties clueless and looking forward to/nervous for the actual first date.
Andrew was really excited for his first date with An, until he found out the location was where her brother worked, making it a pre-date.