I was looking up the definitions of 'beat' and found many, but none of them akin to 'pause'. So can a beat be defined as a pause as well? For example in "After a beat he answered," or is this just a wrong usage, contorted from "To not miss beat"?
I hope someone can help me out. :)
I really think more context is needed to answer you. Your example looks as if it is missing a word - "After a heart-beat, he answered", or is a typo or mis-transcription - "After a bit he answered"
Ok, so maybe this is a better context:
Her head snaps up and, after a beat, laughs. It didn't last long. She snaps and accuses me of trying to change the subject.
(from 2006 June « The Bound & Gags Wonder Blog)
I hope this helps.