Brief snooze (6)
(Other definitions for catnap that I've seen before include "go out briefly" , "Short sleep" , "Brief time out" , "(Tom's) snooze?" , "Drop off" .)
(Other definitions for kip that I've seen before include "Snooze" , "Slumber" , "Nap (slang)" , "Sleep (sl.)" , "Sleep, nap (colloq.)" .)