Where does the expression "He's got a lot of gall" come from?

Answer 1

Found this using Google :

http://www.phrases.org.uk/bulletin_board/17/messages/910.html

"The word gall stems from the proto-root ghel-, meaning yellow, just like gold and gilt, and also cholera do. Gall is therefore yellow bile, a bitter liquid secreted within the liver's gall bladder, an excess of which was thought liable to make you choleric - bitter and angry. Figuratively, gall is most often used to mean something almost too bitter to tolerate."