Meaning of Meaninglessness

What does "meaningless" mean? On the one hand, it signifies simply the absence or lack of meaning. "Zabool" is meaningless just because it doesn''t happen to mean anything. "Green flees time­ lessly" is meaningless, despite a certain semblance of sense, because it runs afoul of certain fundamental rules of linguistic construction. On the other hand, "meaningless" characterizes that peculiar psycho...