n 1. a person who attends some social activity (e.g. party) but doesn't know the people holding the activity, and wasn't invited. ("The party wasn't so bad - only a few randoms showed up.") 2. any person whom the speaker doesn't know well. ("I have a random for a lab assistant.") Submitted by Mountain Man, Central AL, USA, 06-05-1998.
Meaning of RANDOM in English
Slang English vocab. Английский сленговый словарь. 2012