There was a taut edge to Niall 's voice.<br/><br/>I know "taut" means "excited or nervous" but wonder what "taut edge" means here.<br/><br/>Source : <a href="http://dictionary.cambridge.org/dictionary/british/taut_2"><a href='http://dictionary.cambridge.org/dictionary/british/taut_2' target='_blank' rel='nofollow'>http://dictionary.cambridge.org/dictionary/british/taut_2</a> </a>