as in adverb6 •In the sense of.Getting to the bottom of Selmes' thinking is not the easiest of tasks but what in essence he is doing is trading a mummy (as in King Tut) for a big daddy (as in Tennessee Williams). — 1972 •(informal) By which I mean; that is to say.The TV is completely broken, as in I can't get any picture at all. •As pronounced in.That's B as in boy. •(Philippines) Used to emphasize a point. •(Philippines) added after a point has been madeHe's so tall, as in! •(Philippines) asked if the prior statement is really true; reallyA: It's so traffic a while ago. B: As in? A: Yes, it took me an hour to pass through!