Question: what is "now"? 

Answer: now (nou) \nadv.\nAt the present time: goods now on sale; the now aging dictator.\nAt once; immediately: Stop now.\nIn the immediate past; very recently: left the room just now.\nAt this point in the series of events; then: The ship was now listing to port.\nAt times; sometimes: now hot, now cold.\nNowadays.\nIn these circumstances; as things are: Now we won't be able to stay.\n\nUsed to introduce a command, reproof, or request: Now pay attention.\nUsed to indicate a change of subject or to preface a remark: Now, let's get down to work.\nconj.\nSeeing that; since. Often used with that: Now that spring is here, we can expect milder weather.\n\nn.\nThe present time or moment: wouldn't work up to now.\n\nadj.\nOf the present time; current: our now governor.\nSlang. Currently fashionable; trendy: the now sound of this new rock band.\nidiom:\nnow and again (or then)\n\nOccasionally.\n\n[Middle English, from Old English nū.]
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