girl: hey, you're on vacation this week right? wanna come over and [hang out]?  guy: ummm sorry i can't; i'm busy
"non-descript excuse someone gives you when they're trying to get out of meeting or spending time with you
"girl: hey, you're on vacation this week right? wanna come over and [hang out]?  guy: ummm sorry i can't; i'm busy" What is the definition of "busy"?